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Solving a quadratic by completing the square
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- čas přidán 15. 08. 2024
- 👉 Learn how to solve quadratic equations by completing the square. When solving a quadratic equation by completing the square, we first take the constant term to the other side of the equation and create a perfect square trinomial with the quadratic term and the linear term.
Timestamps:
0:00 Intro
0:43 Start of the Problem
1:02 Find the Value C
1:53 Simplify
2:50 Solve
3:24 Answer
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Organized Videos:
✅How to Solve a Quadratic by Completing the Square
• How to Solve a Quadrat...
✅Solve a Quadratic by Completing the Square | Fractions
• Solve a Quadratic by C...
✅Solve a Quadratic by Completing the Square | -x^2+bx+c
• Solve a Quadratic by C...
✅Solve a Quadratic by Completing the Square | 2x^2+bx+c
• Solve a Quadratic by C...
✅Solve a Quadratic by Completing the Square | ax^2+bx+c
• Solve a Quadratic by C...
✅Solve a Quadratic by Completing the Square | x^2+bx+c
• Solve a Quadratic by C...
✅Solve a Quadratic by Completing the Square | Learn About
• Solve a Quadratic by C...
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👨👩👧👧 About Me: I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips. Find more here: www.freemathvi...
#Solvequadratics #completethesquare #brianmclogan
Quick Guide to Completing the Square - czcams.com/video/MveZ6dyKMuA/video.html
It's so much easier being able to pause the teacher without having to socially interact
Nvrmnd online school must be a blessing for you!
Are you an introvert?
@@forest7013 No, my math teacher is just very unapproachable. she's scary.
Aero that’s gg
@@hiroshih9157 is Dianne Requiza your teacher??
This professor is the best. He actually explains what he is doing when in the process of an action and doesn't just get angry and yell when you don't know the answer, like all the other math teachers in school. Love this! He really breaks the deadlock. :)
he's really good about going back and explaining when a student needs a refresher on a step.
IKR teachers are like "DONT YOU KNOW THIS" and I'm like "well obviously...... I dont"
@@crusader3400 omg I explain this to everyone instead of teaching they ask questions and ask us for the answers as if we know???
My teacher wouldn't talk to me about making up a quiz I missed, he walked away from while I tried to talk to him. So I left to go to my next class. I never made up that quiz, I got pissed. I know I shouldn't hold a grudge, but he gets mad at me when I ask questions now. Every time I ask for help with a question, he just fixes it for me instead of letting me go back and trying to solve it myself. He makes me feel like shit. He once made me cry because I didn't finish a test. He doesn't believe I have ADHD just because my parents won't have go to the school to say I officially have it.
Long story short, math class is a living hell. These videos are keeping me going. God bless Brian McLogan because I'd be lost without these videos.
@@cocothompson8257 this is so bad. but u got this!
Anybody else have a test tomorrow and trying to learn it
Yeah me
Me boi
Right here 💀
yeah me next sunday ):
I have a test later today 😂😂
You're a good teacher. Your videos have helped me tremendously, I'm truly grateful. I honestly wish you were my professor. Keep doing what you're doing.
thank you very much will do
cool
@@brianmclogan That stache Though
@@brianmclogan please explain this to me but with a bit more english mixed in there I have a problem for you
“What is the intermediate step in the form (x+a)^2=b as a result of completing the following equation?
-2x^2 + 8x + 73 = 9
bit tired of just cheating and barely getting by cause math keeps getting harder and harder
The day before a test and this honestly just helped me a lot. Thanks
Tmr is my test day lol
I watched this on my test day an hour before
@@peacesantisuk4278 same
Doin that rn
The lesson before the test and this honestly just helped me a lot. Thanks.
If this video or many others was helpful, please consider letting me know with a "Super Thanks" above ⬆. I am able to read and respond to all my messages and thank you so much for your support
YOU THE BEST TEACHER
Hi! Great video. Unfortunately, I’m a little slow, how did you get 17?
@@sirplsputyergunaway573 because the equation equaled 13 and he added 4 to both sides 13 + 4 equals 17
Thank you. You are a lot better than my teacher. I am currently at a 69 on the second to last week of school and this should bring my grade up.
@@shadow11296 yoooo nice
You taught me more in this one video than my professor has taught me all semester.
Bro you were learning this in college.If so why in the fuck am I learning this in high school?
@@ryderstaplins6146 why am I learning this in middle school????
same 😳
@@google4204 fr 💀
@@google4204 yes me tooo
It’s sad I hear CHILDREN in the background, meanwhile, my grown as Is confused af counting my fingers backwards😂😂😂
Bruh it’s fine, this is difficult
Dw, we children having trouble too X((((
Who tf invented math 🤦♂️
Math is the reason we have CZcams, video games and a whole lot of other things
The real Scorpion idc, I rather be bored than being frustrated over my math hw...
@@gb_angel-yt7639 Bro you just can't do math like that. Math is very very important like @The real Scorpion mentioned.
@@gb_angel-yt7639 slader is good for more difficult problems. People post the steps to do the problems to several textbooks.
The real Scorpion you need to pay $3 a month to get the explanation on how to do it. It’s BS
In school teacher takes 1hr for you to learn this will this guy taught me in 4mins
thats because the educational system thinks it takes you one hour to learn very basic stuff
To this day you’ve helped me pass my class. I’m extremely appreciative towards your teaching method and how you make it interesting. Thank you and keep up what your doing 💯
Yo you blessing my grades right now appreciate dawg frfr
Evans Appiah cringe
Francis McGurk it’s cringe you felt the need to reply to this comment 😂😂😂 10 months after the fact
@@francismcgurk4200 how’s that cringe? You pressed or sum?
@@francismcgurk4200 wtf man
@@francismcgurk4200 he showing his thanks
I'm a third-year electrical engineering student who also is about to finish his computer science minor and math minor in a few months, completing the square always trips me up. I have to rewatch it every once in a while and this guy in 4 mins explained it better than all profs and teachers in the last 7 years of learning this.
Math teachers were always like “you won’t be walking around with a calculator” but actual engineers are relearning whole math lessons at the touch of a button😂
Currently in Calc II and needed this for integrating rational functions by partial fractions!!! It's amazing how one thing you learn in middle school comes back to haunt you in college. Thanks for the time you put into these videos, much appreciated!!!!
Lol same
Here for calc II as well lmao
what an easy explanation, thank you so much i needed so much help understanding this
I've watched several of your tutorial videos before. I'm never disappointed. You say everything clear and upfront, no beating around the bush. Thank you very much for doing this for those of us who's teachers aren't as good at explaining things
Love the stache
Who is here before the finals tomorrow?
:)
It's 5 am yep
You betcha
Me
Baby Yoda
Working through this with my daughter for school. Man I wish CZcams was around when I was a kid. If one teacher doesn’t make sense, you try another. Yours was the one that got it to click for me so I could talk it through with her.
For fun, I tried this method on the basic ax^2 + bx + c = 0 leaving in the a, b, and c c as the coefficients instead of numbers. Holy cow! That’s where the Quadratic Formula comes from!
2:00 how did it go from x^2-4x+4 to (x-2)^2?
when you do (x-2)^2 you do (x-2)(x-2) which is (x^2-4x+4)
You use the foil method to get from (x-2)^2 or (x-2)(x-2), which are the same, to get to x^2-4x+4
It’s so amazing to just have someone talk it out and explain to you other than just following instructions from a book (which I don’t get 90% of the times -.-)
You lost me when you went from (x2-4x+4)=13+4 to (x+2)=17. I understood everything before that, and after that, but that par still has me confused.
Factored it
@Anonymous User yeah im still confused I've been searching through videos trying to find a explanation for this and nothing is helping the factoring part is hard too cause im not good with times tables😬
@Anonymous User well i am good at multiplication but there just not memorized its takes time for me to find it
@Anonymous User Thanks this makes a lot more sense now.
Same
omg thanks to you im getting an A for math. I do online gcse and dont have a teacher (i just watch videos of people explaining, which most of the time makes 0 sense) and your videos makes math so easy!!! Sending thanks all the way from south africa
He’s so awesome! Thank you.
Side note: Mr. McLogan, you must have quite an extensive wardrobe because I’ve never seen you in the same shirt twice. :)
This was perfect! I spent 30 minutes looking at the notes to do my homework for 2 of these problems. I wish I would have found this channel sooner.
🙌🙌🙌
I am self studying for FM and I don't know what I would do without your videos, Can I just say I love them?!
Your students are lucky to have a teacher like you
These videos are literally perfect. I have a test tomorrow and just needed a quick review on this before I go to bed and this gave me exactly what I needed.
How was your test? If you remember
Amazing teacher! Thankyou so much for this lesson. Saved me from struggling.
i just gotta say...thanks...almost 10 years later and you're still helping students like me make A's ;-; :)
👊👍👍
Thank you for explaining this in a manner that makes it so easy to understand. It helped a lot when my professor left me beyond confused by not actually explaining why she was doing what she was doing.
That moment where an engineer (me) comes back to watch this video because I low key forgot how to complete a square.
I'm going into precalc and I needed a refresher thanks
you are very welcome! I am teaching Pre-Calc this year so look out for new videos
Im going into 9th grade and testing out of algebra one. You have been incredibly helpful over these 2 months and my second exam is tmmr, with how much i have learned from you im pretty confident in myself!
My work is due tonight and here I am trying to learn how to do it
Hopefully u succed
I'm sorry for saying this but his pfp looks like Johnny Sins
2:56 How did you get 2? Did you simplify 4?
you factor it
You teach it better AND faster than my college profesional! THANK YOU!
Thank you so much! This helped me a lot! This kinda saved my butt for a final so I thank you so very much!!
Dude u have saved me thank you so much god bless your soul
Good looking for the explanation, I got a algebra rengent today pray for me 😂
NY I see....well I'm guessing you finished so how did you do?
Eyy Boss bro it valid tbh 😭😭 some questions had me tight tho 🤷🏽♂️🤦🏽♂️
@@Lmaosmd well hopping you passed bro!
@@Lmaosmd did u passed
Olivia Pope yea lmao thanks to this mans 💯💯
Thank you so much for making these videos! They have helped me so much and you explain it so well. My math teacher is so confusing and makes things unnecessarily complicated. Thanks again!
Wish I had a teacher like this
Omg I've gone all semester without knowing how to complete the square and you just saved my live 😭🙏🏼
How did he get (x-2)^2 if the coefficient is -4x????
this is a month late but 2 squared is 4 and it’s a subtraction sign so it’s negative. the x is the variable so it goes after the 4. so it’s -4x
Coming back to this in Calculus. I haven't done this in years
Thank you, I didn't understand it until I watched this video! To bad I don't have you as a teacher.!
Ahh I wish you were my math teacher that would be awsome 😀
so literally no one in that class asked how he got (x - 2)^2 = 17
that's what i was thinking like how tf we get here
They probs smart
Your instruction has been, and will continue to be extremely helpful over the course of my math journey. Thank you.
i am really grateful. it helped me in my modular classes because i can't understand my module huhu thank youuuu sir.
Where did the 4 go
Who else is here right before an algebra test
currently a pre-med student taking calculus after years of not doing math and oh my god this helped SO MUCH THANK YOU !
good luck
I would be so happy if this guy was my teacher, my algebra professor makes it seem so much harder than it actually is! ugh youtubing my way to the finish line
I have my test in 10 minutes so I’m learning this 😭
Hope you did good
@@dovidsilbert I did 🫂
@@AlexYiutu-_- great hopefully I’ll do good too. I got algebra 1 regents coming up in a few weeks
Damn u look like Jason Kidd
This guy is literally my hero i cant even lie
This dude gets you what you need in four minutes. LEGEND.
nah i give up
My teacher said you divide by 2 but you didn’t 4 divided by 2 is 2
There is a square there
Yes, you're correct. You first divide it by 2 which in this video (-4/2)=-2. Then you have to square that number which is 4. -2^2=4 because a negative multiplied by a negative is equal to a positive.
this man literally saves my life 😩🙏🏻
Thank youuuu! Teachers like you on CZcams are real heroes
the way that he tought it so simply and clear just amazes me considering i found this so complicated when my teacher tought me this
thank you for helping me learning this unit. I had a hard time in class with this and you made it ALL make sence. thank you for what you do and may God bess your life,
There is an issue in how this is taught. Around 1:30 for example, the square of half of the second term is taken and there is no connection mentioned to why
I think he just factories it if that's the answer if not I don't understand what you mean
Where did you get the -4, and where did (b/2)2 come from??
I couldn't find a teacher such as you in Math exactly in CZcams .
No no no you are a wonderful teacher
Thank you, this was very helpful! Also I love your channel guidelines! 😻
thank you, I'm studying for my math regents and this is gonna help a ton-
Thanks random American guy, as year 11(a 15-year-old) doing GCSE end of highschool exams in 6 months maths this helped quite a bit
Honestly just watching this helped me understand way better than learning it for a week straight in class. Im in 7th grade algebra and have a big pre-test tomorrow. This just made it way easier for me, thank you so much.
This man has saved my hide for tests more times than I can count
So in Algebra 1... I have my EOC next month and hardly know anything....hopefully he helps!!
I gave up on online school math but his videos are honestly a blessing
When he first moved the constant “-13 to the other side he changed it to positive so if my constant is positive 1 do I change it to negative??
To get rid of -13 in the left side he had to add +13 to both sides. -13 + 13 is 0, and he had to add the same value to the other side to keep the equation even. When getting rid of something on one side to move it to the other, you always add the opposite of it. If you want to move x to the other side you need to add -x to both x itself and the other side.
Hopefully this makes sense.
ALL the love in the world for this man
You make things click a lot better that my math teacher! Lmao I have to go to your channel after every class...
Very to the point and organized. Thanks for the excellence!
I wish now that I remembered the entire step by step process of completing the square when it came to quadratic equations...........it seems so easy the way you did it Brian. Thank you.
This helped me finish my BC Calculus homework. I completely forgot how to complete the square. Thank you 🙏
Thank u so much. The struggles are real and having videos like these help us from getting stuck.
Thank you so much man, wish my teacher did what you did
I don't understand help
4 minutes to teach what normally takes my teacher an 88 minute block. Video speaks for itself
Algebra 2 test next period, hope this helps.
Good teachers are what makes the world turn
Very clear lecturing. Thank you.
online school is so much easier with teaching that takes 4 mins instead of 90 minutes. and the in person teacher makes it more complicated rather than just doing the equations lol
this actually helped me so much, thank you 🙏
THANK YOU SO MUCH. MY TEACHER DID NOT EXPLAIN HOW TO DO THIS AND YOU ARE A LIFESAVER
without this guy a million people would have been fucked at some point in their math career
Can someone explain to me how he got the x-2 squared at the end please
Thank you teacher from somalia🇸🇴🇸🇴🇸🇴
Definitely the type of thing where it helps SO much more to see it rather than just read about it
Why can't math just solve it's own problems instead of causing more for me?? 🤷♀️
Fax
He made me understand in 10 sec, while my math teacher couldn’t help me at all
Man your way better than my teacher I was so confused before you
That is a really nice shade of green
This clears up a lot, thank you! Just one question, why is it that (b/2)^2 is now deemed as our c value?