(x)(x)+15x=324

Solution for (x)(x)+15x=324 equation:

Simplifying
(x)(x) + 15x = 324

Multiply x * x
x2 + 15x = 324

Reorder the terms:
15x + x2 = 324

Solving
15x + x2 = 324

Solving for variable 'x'.

Reorder the terms:
-324 + 15x + x2 = 324 + -324

Combine like terms: 324 + -324 = 0
-324 + 15x + x2 = 0

Factor a trinomial.
(-27 + -1x)(12 + -1x) = 0

Subproblem 1
Set the factor '(-27 + -1x)' equal to zero and attempt to solve:

Simplifying
-27 + -1x = 0

Solving
-27 + -1x = 0

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

Add '27' to each side of the equation.
-27 + 27 + -1x = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -1x = 0 + 27
-1x = 0 + 27

Combine like terms: 0 + 27 = 27
-1x = 27

Divide each side by '-1'.
x = -27

Simplifying
x = -27
Subproblem 2
Set the factor '(12 + -1x)' equal to zero and attempt to solve:

Simplifying
12 + -1x = 0

Solving
12 + -1x = 0

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

Add '-12' to each side of the equation.
12 + -12 + -1x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 0 + -12
-1x = 0 + -12

Combine like terms: 0 + -12 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12
Solution
x = {-27, 12}