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x= -b/2a . Where is he getting this from? I don't understand this part.

Thanks

finally understand it 16 June 2024 23:15 thanks🎉

Quick question, why do you multiply by ½ instead of dividing by 2?

why can we not use the combination formula for question 12?

I wish that I had teachers like you in school. Your voice is calming. Your delivery of information is smooth and simple. Thanks. You have made college for me possible.

Thank you so much

Had to learn advanced Trigs much later in life, this video has filled in some gaps of my knowledge. I'm 75yrs old, so still learning out of curiousity and keeping the mind alert. Making the concept of a 'new origin' is the 'penny dropper', I guess that's the difference between a Teacher that can teach a subject and one that can't. Many thanks for your video.

this video solved my problem, thank you!!

This DID NOT help.

Beautifully explained

Why -2

nice lesson baldi

Thank you so much this was the one thing i was confused about this year in 7th grade. I have finals tommorow morning and i just wanted to clear this up. Your a live saver!❤❤

2024 people here

made 7 years ago, but still very beneficial. Thank you so much, better lesson than aleks!!

Thanks for the video

Thank you so much sir!!😊

Who else has math tests tmr 😂

You're a great teacher. Many people teach maths but not all are good teachers. You're doing a good job. Keep it up!

Based.

Do you know the formulas for X Constant and Y constant and the line Gregg that starts at 0 and the one that starts above 0? It’s for my Exam

Thank you for this video 😊

Him with Sal Khan and The Organic Chemistry Tutor is all we need to pass hs math. Very helpful video for Alg 1.

mr clean is so hot

Thank you so much! That is crystal clear!

this was so helpful, thank you!!

you are my savior i have finals in 8 hours and I'm freaking out

Why can’t you just be my teacher 😪

How do I find the scale factor with rectangles, but if the difference between the height and width aren't proportional? Like for example, the old rectangle is 3 x 5, and the new rectangle is 4 x 8?

MARIO THANK YOU SO MUCH YOU JUST SAVED ME

I did your problem In my calculator and I still didn’t get the answer

thanks!

what would be its domain and range?

I had a question for question 43 I solved the proportion by writing it like this 9/6 = x/20. A little different than what you did 9/x = 6/20. Even though I got the same answer of 30. Is it right?

This is wizardry

Thank you sooooo muchhhhh,, you helped me a lottt❤❤❤

How can I get the next video

good

Great video! Not only because you explained how to find it, but rather because you actually explained what it is! tysm

i have a further maths exam in an hour you have just saved my life

Solve cos (theta +25)=sin(theta+25)

sucks ass in explaining

Thank you! This made the topic very clear.

This is a really helpful review, but just thought I would throw in there's another(easier, faster) way to solve the two problems for #25. Treat it just like a polynomial and factor completely(I use "the diamond method" by making a large X) The remaining terms can be set equal to zero and solved that way. It was easier because it won't give you any square roots or fractions to deal with

@2:31 that made my day 😂😂

you just saved me from so much pain, thank you so much.😭

I have a question about your geometry full course videos that you’ve made. Does that cover EVERYTHING I need to know in geometry? I’m trying to teach myself geometry to take an exam. If not, what do you recommend?

you made so less complicated thanks!!!