8x^2+18x-18=0

Simple and best practice solution for 8x^2+18x-18=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 8x^2+18x-18=0 equation:


Simplifying
8x2 + 18x + -18 = 0

Reorder the terms:
-18 + 18x + 8x2 = 0

Solving
-18 + 18x + 8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-9 + 9x + 4x2) = 0

Factor a trinomial.
2((-3 + -1x)(3 + -4x)) = 0

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-3, 0.75}

See similar equations:

| 3x-8=5x-4+x | | -4(10+-2y)+y=23 | | 18x^2+18x-18=0 | | -4y+y=23 | | -9x+4-12=64 | | 9=n(2)+11 | | .3x^2-140x+2500=0 | | 3(X-2)-X-2(2x+1)=0 | | 2k-k-1+3k=-5 | | 5y+y=300 | | 10x^2+2.2x-1=0 | | x^2+58x-38=0 | | y=-2(6)+12 | | 0.5(4z-2)=0.5z+10-2-1.5z | | x+11=61 | | -5y-9=-(1) | | x^2+53-38=0 | | -8(n-4)+4(n+1)= | | 8e^9t=10e^8t | | h=-16t^2+96+112 | | -4y^2+8y-3=0 | | (4x+8y)dx-(8x+3y)dy=0 | | x+2x=3x+1 | | 2(-2x+12)-x+6=0 | | 8-3(2-3x)=34 | | 4(x+2)-2(2x-3)=10 | | 0.4(x-10)=0.3x+9-3+0.2x | | X=12x+12 | | f(x)=(x-5)3 | | -9x^2+12x-5=0 | | 1+x=1.46x | | 2x+5=9x-1.666666667 |

Equations solver categories