(x)2(2x)2=45

Solution for (x)2(2x)2=45 equation:

Simplifying
(x) * 2(2x) * 2 = 45

Remove parenthesis around (2x)
x * 2 * 2x * 2 = 45

Reorder the terms for easier multiplication:
2 * 2 * 2x * x = 45

Multiply 2 * 2
4 * 2x * x = 45

Multiply 4 * 2
8x * x = 45

Multiply x * x
8x2 = 45

Solving
8x2 = 45

Solving for variable 'x'.

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

Divide each side by '8'.
x2 = 5.625

Simplifying
x2 = 5.625

Take the square root of each side:
x = {-2.371708245, 2.371708245}