3x^2=12-9x

Simple and best practice solution for 3x^2=12-9x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x^2=12-9x equation:


Simplifying
3x2 = 12 + -9x

Solving
3x2 = 12 + -9x

Solving for variable 'x'.

Reorder the terms:
-12 + 9x + 3x2 = 12 + -9x + -12 + 9x

Reorder the terms:
-12 + 9x + 3x2 = 12 + -12 + -9x + 9x

Combine like terms: 12 + -12 = 0
-12 + 9x + 3x2 = 0 + -9x + 9x
-12 + 9x + 3x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-12 + 9x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-4 + 3x + x2) = 0

Factor a trinomial.
3((-4 + -1x)(1 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1

Solution

x = {-4, 1}

See similar equations:

| 5-2(3x^2-2x)=x^2-7-2x^2 | | 4x+3y=28 | | 12(2x-5)=8(3x-2) | | -28=7+5x | | 11d+8=8d+35 | | 10s^2-33s+20r^2= | | -4.6x=46.0 | | 9(x-4)=-9 | | 9(a+6)=103.5 | | 15s^2+14s-8= | | -1=4c-7 | | 15x+13=5x+243 | | 9e-2=52.9 | | 2p=17 | | 4(x-4)=16 | | 2(a+6)=24 | | 6x=27 | | -15y^2-13y+20= | | -11+x=x+23 | | 13=4c-7 | | 5e-6=39 | | x(x-8)=3x^2+4 | | 6*6+8*8=c*c | | 6-7x=-43 | | 4x+46=9x-9 | | 88=7x+3 | | 88=7x-3 | | 4+5x=34 | | 9k-[3k+(-2+4k)]= | | 7y-7y= | | 5x=-14 | | 4x-13=27 |

Equations solver categories