3x(x-5)=-12

Simple and best practice solution for 3x(x-5)=-12 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 3x(x-5)=-12 equation:


Simplifying
3x(x + -5) = -12

Reorder the terms:
3x(-5 + x) = -12
(-5 * 3x + x * 3x) = -12
(-15x + 3x2) = -12

Solving
-15x + 3x2 = -12

Solving for variable 'x'.

Reorder the terms:
12 + -15x + 3x2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + -15x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(4 + -5x + x2) = 0

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

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {1, 4}

See similar equations:

| (6x-1)/5=y | | 7-(2z-2)=8-3z | | -(d-4)=14 | | -35n^2-67n-30=0 | | 8-3(p-4)=2p+5 | | X*2X(X+2)=90 | | 6x+12(-2.2)+12*2.2=0 | | 5(29-1)=60 | | 2(-42+x)= | | -2y+2x-6=0 | | 180(8-2)= | | 6n+48= | | r^2-4r-50=-7 | | p=2*(l+w) | | 7n^2+24n+9=0 | | 5w(-8w+16)=0 | | n^2+12n-30=-2 | | 4b=-29-b^2 | | 8-26+5c=20 | | 12-5(4x+2y)= | | (8-2)180= | | -8w+16=0 | | -55-6v=-v^2 | | 7+2(5-3)= | | 3x(4-3x)+15x=-32 | | 18x-7=13x-22 | | y*6= | | -3(9x+2)+10=10 | | 3xn=21 | | 17x+5(2-3x)=18 | | 15k^2+26k+7=0 | | x^2=-55-12x |

Equations solver categories