12x^2-3x=9

Simple and best practice solution for 12x^2-3x=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 12x^2-3x=9 equation:


Simplifying
12x2 + -3x = 9

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

Solving
-3x + 12x2 = 9

Solving for variable 'x'.

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

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

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + -1x + 4x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -4x)' equal to zero and attempt to solve: Simplifying -3 + -4x = 0 Solving -3 + -4x = 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 + -4x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -4x = 0 + 3 -4x = 0 + 3 Combine like terms: 0 + 3 = 3 -4x = 3 Divide each side by '-4'. x = -0.75 Simplifying x = -0.75

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 = {-0.75, 1}

See similar equations:

| 6+5y=3(4y+2) | | 2x-11=4x-5 | | y^2+7y=-10 | | 5-x=8 | | (1)(x)=(0.01)(20+x) | | 4x+5y=16 | | 7-3(2x-1)=2x+26 | | 11+m=.25m-2m | | .80p-4=.666p | | 7z-4=-13+7 | | 5(b-x)=2b+ax(a-b) | | (3a-b)-bx=a(x-2)(a-b) | | -2[4(k+2)-3(k+1)]=14+2k | | 2[x-(3+2x)+9]=3x-8 | | 4n-3=21 | | 12x^2-28x+12=0 | | 7x+9=2(4x+2) | | -67.4x-8.7= | | 7x^2=3 | | 7v^2-84v+224=0 | | x+y-z=2 | | 8h-12=n+8-12 | | 3x=3y+3 | | 2x-10z=6 | | 2x-1=(4y+2)-1 | | 0.4(-5b)= | | 2x+y=3y+6 | | v^4-2401=0 | | 2x+4=5x-2 | | 6(2x-1)-4x=-138 | | -16t^2+64t-28=0 | | 6x^2+9x=-55x |

Equations solver categories