12x^2-3x-9=0

Simple and best practice solution for 12x^2-3x-9=0 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=0 equation:


Simplifying
12x2 + -3x + -9 = 0

Reorder the terms:
-9 + -3x + 12x2 = 0

Solving
-9 + -3x + 12x2 = 0

Solving for variable 'x'.

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:

| 4x+24=-4 | | (9-2i)(4+7i)= | | 5v^2-7v=1 | | 44-c=26 | | 26+c=19 | | -8=-17+x-14 | | 4(x-1)=2(x+4) | | a+7=-3 | | 2a+1a=24 | | 5c+6=(3+2c) | | x+19=32 | | z=10+3(x+y) | | 4x-6=3x+2 | | 3(n-1)=1.5(n+2) | | 63=9(2y-3) | | 4(2p-1)=28 | | 2(3+x)=14 | | 8(z+2)-5(z+3)=16 | | -16+x=x-16 | | 4z=7z+12 | | 2(3x-3)+5(x-4)=4(x+2) | | 4(x-3)=2(x-1) | | 23-12x=-(7+2x) | | -1+10=5b-8-4b | | x-4x=-5x-20 | | 56x^2+8x=0 | | 2a^2-9a+3=0 | | 10x^2-26x+12=0 | | 4x^2+8x-77=0 | | 3v^2+28v+49=0 | | x^2=5x+2 | | -3(5t-12)=4t-21 |

Equations solver categories