2x^2-8*x-90=0

Simple and best practice solution for 2x^2-8*x-90=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 2x^2-8*x-90=0 equation:


Simplifying
2x2 + -8x + -90 = 0

Reorder the terms:
-90 + -8x + 2x2 = 0

Solving
-90 + -8x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-45 + -4x + x2) = 0

Factor a trinomial.
2((-5 + -1x)(9 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-5, 9}

See similar equations:

| -35-5x=5-9x | | 9x-27=9(x+2)+9 | | (-3y)x(4z)= | | 5x=3y | | 36*x^2-25=0 | | 12x+50y=5 | | 9-5n=16 | | -33-8x=10x-21 | | 9x+10=46 | | 2.4m-3+3.8=-8.2 | | 6+k=-k+2-9 | | 12x+30=4x+158 | | 54-2x=7x+16 | | 14-9x=116-30x | | 5*x^2-35*x+60=0 | | 11f=-33+8f | | 7y+5=6y+11 | | -177-10x=10x+23 | | x=3x^2-7x+4 | | 5x-4=3x-3 | | 6x+7=-73-10x | | 28x-56=8(x+2) | | 81x=729 | | -64x^3+125=0 | | -36-4x=6-10x | | 6m-9m=45 | | x^2+12*x+36=0 | | 11x=20x-18 | | 20-0.2d=0.3d+16 | | x^2-16*x+64=0 | | 139-4x=41x+19 | | -79-10x=129-37x |

Equations solver categories