18(8)=(x+x)x

Solution for 18(8)=(x+x)x equation:

Simplifying
18(8) = (x + x) * x

Multiply 18 * 8
144 = (x + x) * x

Combine like terms: x + x = 2x
144 = (2x) * x

Remove parenthesis around (2x)
144 = 2x * x

Multiply x * x
144 = 2x2

Solving
144 = 2x2

Solving for variable 'x'.

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

Add '-2x2' to each side of the equation.
144 + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
144 + -2x2 = 0

Add '-144' to each side of the equation.
144 + -144 + -2x2 = 0 + -144

Combine like terms: 144 + -144 = 0
0 + -2x2 = 0 + -144
-2x2 = 0 + -144

Combine like terms: 0 + -144 = -144
-2x2 = -144

Divide each side by '-2'.
x2 = 72

Simplifying
x2 = 72

Take the square root of each side:
x = {-8.485281374, 8.485281374}