x*(x+2)*3=144

Solution for x*(x+2)*3=144 equation:

Simplifying
x(x + 2) * 3 = 144

Reorder the terms:
x(2 + x) * 3 = 144

Reorder the terms for easier multiplication:
3x(2 + x) = 144
(2 * 3x + x * 3x) = 144
(6x + 3x2) = 144

Solving
6x + 3x2 = 144

Solving for variable 'x'.

Reorder the terms:
-144 + 6x + 3x2 = 144 + -144

Combine like terms: 144 + -144 = 0
-144 + 6x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-48 + 2x + x2) = 0

Factor a trinomial.
3((-8 + -1x)(6 + -1x)) = 0

Ignore the factor 3.
Subproblem 1
Set the factor '(-8 + -1x)' equal to zero and attempt to solve:

Simplifying
-8 + -1x = 0

Solving
-8 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + -1x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = 0 + 8
-1x = 0 + 8

Combine like terms: 0 + 8 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8
Subproblem 2
Set the factor '(6 + -1x)' equal to zero and attempt to solve:

Simplifying
6 + -1x = 0

Solving
6 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + -1x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1x = 0 + -6
-1x = 0 + -6

Combine like terms: 0 + -6 = -6
-1x = -6

Divide each side by '-1'.
x = 6

Simplifying
x = 6
Solution
x = {-8, 6}