4x^2+12x-40=0

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


Simplifying
4x2 + 12x + -40 = 0

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

Solving
-40 + 12x + 4x2 = 0

Solving for variable 'x'.

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

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

Ignore the factor 4.

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 '(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

Solution

x = {-5, 2}

See similar equations:

| 6x+y+20z=200 | | .60*x=27 | | x^2-11x=4 | | 14-9x=44-30x | | x*ln(x+2)-4*ln(x+2)=0 | | 0.83333333333q+7=4-0.6666666666666666q | | 8x^3y-4xy^3-7=0 | | x=x+24 | | 15p-2=9p+7 | | 16x-21=12x-16 | | 3x+x=-111-10x | | -7x-8x= | | W-3=-2 | | 67=3y+16 | | -5j-2j-2=-23 | | 0.85714285714d-5=0.42857142857d-2 | | m+(-4m)= | | 3x-2(x+7)=16 | | 3(2x+4)=4(x+5) | | 4x+7=7x+5 | | 5x^2-3x-5=0 | | 6(x+3)+3x=3(x-2) | | 7m+3+4m=-9 | | -2h+1=7h-8 | | -6y+9=-7y+6 | | 7y+1=5y+9 | | 0.4x+8=5x-1.2 | | 4p-5+2p=10+5p+3 | | z+6=8z-6 | | 4u-3=2u-17 | | 182-5x=40x+17 | | 3m+2=9m-16 |

Equations solver categories