Math Problem Solved #1

This video was done by request from the Netherlands.

Solution to the problem

3x^2 + x = 12 + 2x^2

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[gallagherawesome]

I just learned factoring in math class today!!!! I totally understood!

[bartolochus]

@templar19

I'm dutch and i learnd this at 1st class of highschool

so the one asking must be 12 or younger

or very stupid and have a boring teacher

[templar19]

THAT question came from the NETHERLANDS?? How old was that student...6??

[manudude02]

@ScrewAttackChina Doing the completing the square method there gets a little messy, but gets the right answer in shorter time.

x^2+x=12

(x+0.5)^2= 12 + 0.25 = 12.25

-(x+0.5)= 3.5 (leading to x=-4)

or x+0.5= 3.5 (leading to x=3)

[manudude02]

Thumbs up if you can prove the quadratic equation :)

[timaliceetbouqui]

the fastest way to resolve this equation is:" 3x^2-2x^2+x-12 =0 or x^+x-12 =0 a=1 b=1 c=-12 delta=b^-4ac x1

[Imacool22]

the quadratic equation really isnt that complicated simply use ax2+bx+c=0 and match it to the formula. then use the quadratic formula which is -b+or-the sqaure root of b sqaured -4ac all over 2a. so -1+-sqaure root of 1sqaured - 4(1)(-12) divided by 2(1)

and then just solve

[katriona04]

Thanks for helping me relearn what I knew in high school. . . I just wish you spent more time explaining more ways to solve it. And thanks elephant, for that song reference. I will remeber it again . . Not that I need to use the knowledge in my everyday life. . .

[kokopelli121123]

you should look up completing the square, it can be a very useful way to solve these problems

[ScrewAttackChina]

kokopell, whar r u talking about? u mentioned the two options which was already listed in the video. you just added "completing the square" which is what, exactly? then u say the list goes on... what list? u mentioned one other choice that didnt even make sense