x*(3x-6)=9

Simple and best practice solution for x*(3x-6)=9 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 x*(3x-6)=9 equation:


Simplifying
x(3x + -6) = 9

Reorder the terms:
x(-6 + 3x) = 9
(-6 * x + 3x * x) = 9
(-6x + 3x2) = 9

Solving
-6x + 3x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + -6x + 3x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + -6x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + -2x + x2) = 0

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

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-1, 3}

See similar equations:

| 4d^2-5=-8d | | -3a^2-27a-18=0 | | 84=-24 | | 6x-8-4x=4x-5 | | 10z+20=x | | b-25=87 | | 8(z-5)=16 | | 15+10z=x | | x=y^3-11y | | 0=x^4-x^2-20 | | 12(k-6)=12 | | 8=y-16 | | 3x^2-22x+6y+40=0 | | 20y+4=4(4y+1) | | 7=y-16 | | x+9+1-11x=12(x+10)+6(1+6x) | | b^2-2b-48= | | -23=3u+9u-11u | | x+2(42)=101 | | 11(h-4)=88 | | 52x=37Y | | (7.004)(22.90)=r | | 1.5x^2+2.5x-14=0 | | 9x+5x=2340 | | (z+2)-(3z-6)=4 | | 20y+4=4(6y+1) | | 6(j+9)=6 | | X+4x+24=3x+24 | | C^2+19c+90=0 | | 21y+4=4(3y+1) | | x-24=9x-6x+6+4 | | 10(e+6)=30 |

Equations solver categories