[(2x)(2x)]+9=59

Solution for [(2x)(2x)]+9=59 equation:

Simplifying
[(2x)(2x)] + 9 = 59

Remove parenthesis around (2x)
[2x(2x)] + 9 = 59

Remove parenthesis around (2x)
[2x * 2x] + 9 = 59

Reorder the terms for easier multiplication:
[2 * 2x * x] + 9 = 59

Multiply 2 * 2
[4x * x] + 9 = 59

Multiply x * x
[4x2] + 9 = 59

Reorder the terms:
9 + [4x2] = 59

Solving
9 + [4x2] = 59

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 + [4x2] = 59 + -9

Combine like terms: 9 + -9 = 0
0 + [4x2] = 59 + -9
[4x2] = 59 + -9

Combine like terms: 59 + -9 = 50
[4x2] = 50

Divide each side by '4'.
x2 = 12.5

Simplifying
x2 = 12.5

Take the square root of each side:
x = {-3.535533906, 3.535533906}