Finding Turning Points using Completing the Square

This video explains how completing the square can be used to find turning points of quadratic graphs. It includes several exam style questions

[@emmatamago]

I'm only about a minute into the video and I've now learnt more about turning points than in several 50-minute maths lessons. Thank you!

[@rowanrayner5913]

Fr

[@BobBob-qy6tl]

Thanks so much! GCSE is in an hour.

[@jemmamoylan-torke1878]

This is cramming to a whole new level

[@diegocanzanella8390]

bro it's literally the same thing but 2 years later

[@jackpepper4432]

how did it go?

[@wjkkwjkf2980]

how did it go?

[@dustwinebirds9123]

how did it go?

[@spongeboy5575]

THANK U SM FOR THIS i have not understood a single maths lesson in months but the entire thing just made sense to me i owe u my life

[@corbettmaths]

You're welcome! Glad we were able to help 😊

[@rebeccajohn8672]

You're so good at teaching, my math teacher doesn't do ANYTHING useful so I'm always left clueless at the end of each class. I have a math mock exam tomorrow and omg this video helped me SO MUCH! I might not totally fail thanks to you! ^.^ Thank you!

[@connorrook3309]

Surprisingly easy to find the turning point from just a and b. Many thanks!

[@yevak2848]

Thank you so much! My GCSE is in just over an hour and this video was just what I needed :)

[@Badger3]

Literally a lifesaver, now I understand this!!

[@benjaminmcconchie3433]

Thanks a lot, helped so much on a question my teacher didn't explain too well x

[@vannesahkaku4919]

This is amazing to watch because it explain more than our match teachers🙏🙏🙏🙏

[@LewiTheFly992]

Thank you so much, I’m a year 11 student and I have struggled so much with quadratics. This video is now going to be my go to for revision. Thank you!

[@diaryofaweirdo4645]

At 5:50 ish why do you move the graph for to the right not the left? You said it become (4,-15) so why does the 4 become positive? Thanks :)

[@GrahamGuerrero]

legend

[@corbettmaths]

Cheers!

[@wowwords2584]

Thanks so much, this was really helpful!

[@deshiigaming7555]

Is it just me or does this guy sound like the mygcsescience physics guy? Great video though.

[@corbettmaths]

I watched one of the videos there and I'm sure he is a great guy but personally I don't think I do 🙊😜

[@AmritjotSingh-vn4ct]

So real lol

[@khadijamalik1622]

Thank u soo much this was incredibly helpful

[@corbettmaths]

Glad it helped!

[@xenontask1895]

Great explaination. So clear to understand

[@emmanuelrufai6471]

Thanks for the video, everything is wonderfully explained

[@riditanahar4191]

Made it so much easier. Thank you!

[@Aleena1604]

Such a genius...made my day sir 😃

[@katrinabarlow7501]

I love this! such a clear explanation, thankyou.

[@trewtube2409]

You make it look so easy!

[@sampotter6916]

thank you a thousand!!. very clear and very helpful

[@priyawarshinijayakumar6645]

Thank you the video was very useful

[@pain9594]

when you don't pay attention in online classes, panic, and then remember that gifts from god like these exist

[@phypid6246]

Absolute legend!

[@Kazzaofficial]

Is thus foundation?

[@corbettmaths]

No this would be Higher! 👍

[@_godsl4yer_]

Can you explain why when I do (x-4)^2-15 = 0, I can't do x=4+15 assuming that (x-4) are the two factors? But instead I have to +15 on both sides and sqrt both side and then +4.

[@floragarveygardening1864]

Thank you! Excellent explanation - totally understand now.

[@lourdisefmn8035]

LIFESAVERRR, ive got a math exam tomorrow

[@BobBob-qy6tl]

Thank you so much 😭😊

[@jaydenboussac7529]

j got a rlly gd maths mark fro my exam thnx

[@huiying7883]

Thankyou so much !

[@davidhill8163]

well explained thanks

[@TheToasterCreator]

Thank you , gcse in 40 minutes

[@zaarakhan6507]

thankyou so so much🙏

[@moonclose9787]

Thank you

[@phantomgaming5379]

Thank u so much

[@sumaya6718]

5:23 its wrong because a minus and minus makes plus so shouldn't it be positive 16 not negative

[@corbettmaths]

I'd recommend you watch my video on Completing the Square. If you expand the brackets, it is +16, that's why we put -16 afterwards, to give zero

[@beanmachine1248]

Cheers mate

[@rex1306]

Great video!!!

[@godfreykatongo3184]

Perfect

[@TheKingCreeperChanne]

Thank you :)

[@vaibhavmaloo7909]

thank you