(5x)(3x)+9=180

Solution for (5x)(3x)+9=180 equation:

Simplifying
(5x)(3x) + 9 = 180

Remove parenthesis around (5x)
5x(3x) + 9 = 180

Remove parenthesis around (3x)
5x * 3x + 9 = 180

Reorder the terms for easier multiplication:
5 * 3x * x + 9 = 180

Multiply 5 * 3
15x * x + 9 = 180

Multiply x * x
15x2 + 9 = 180

Reorder the terms:
9 + 15x2 = 180

Solving
9 + 15x2 = 180

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 15x2 = 180 + -9

Combine like terms: 9 + -9 = 0
0 + 15x2 = 180 + -9
15x2 = 180 + -9

Combine like terms: 180 + -9 = 171
15x2 = 171

Divide each side by '15'.
x2 = 11.4

Simplifying
x2 = 11.4

Take the square root of each side:
x = {-3.376388603, 3.376388603}