0=-4x^2+12x+40

Simple and best practice solution for 0=-4x^2+12x+40 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 0=-4x^2+12x+40 equation:


Simplifying
0 = -4x2 + 12x + 40

Reorder the terms:
0 = 40 + 12x + -4x2

Solving
0 = 40 + 12x + -4x2

Solving for variable 'x'.

Combine like terms: 0 + -40 = -40
-40 + -12x + 4x2 = 40 + 12x + -4x2 + -40 + -12x + 4x2

Reorder the terms:
-40 + -12x + 4x2 = 40 + -40 + 12x + -12x + -4x2 + 4x2

Combine like terms: 40 + -40 = 0
-40 + -12x + 4x2 = 0 + 12x + -12x + -4x2 + 4x2
-40 + -12x + 4x2 = 12x + -12x + -4x2 + 4x2

Combine like terms: 12x + -12x = 0
-40 + -12x + 4x2 = 0 + -4x2 + 4x2
-40 + -12x + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-40 + -12x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-10 + -3x + x2) = 0

Factor a trinomial.
4((-2 + -1x)(5 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

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

Solution

x = {-2, 5}

See similar equations:

| x^2-0.4x-1.65=0 | | 4x+7=4(x-8) | | x^2+x-1.65=0 | | 0=1.1x+.04x^2 | | (u-(π/4)) | | Y=.04x^2+1.1x | | -1/5x-4-5 | | -1/3x-4-5 | | (X+2)+9x+18=0 | | 2377960+26x=2067959+12x | | 4-7x-y=0 | | 5m^2+11m+15= | | 8x+9=5x+10 | | 11x=2(x+9) | | 18m^2+60n+50=0 | | x^3-5x^2-11x+39= | | -5x^2+5x+3=4 | | 5x-18y+4=0 | | 16/8-X=4/X | | 4cos+3sin=5 | | 5w-43=10.7 | | -4.9t^2+12t+300=0 | | 4x6/5 | | 720*17/12 | | x/-2-6=y | | 15x+23(x-4)=212 | | 15x+7y+3z+w-8=040x+13y+4z+w+5=0 | | 2x^2+60x=319 | | 7/15=x/1000000 | | 2x^2+60=319 | | 5m+33=9m-3 | | 9x-67=77 |

Equations solver categories