36=.5(x*2x)

Solution for 36=.5(x*2x) equation:

Simplifying
36 = 0.5(x * 2x)

Reorder the terms for easier multiplication:
36 = 0.5(2x * x)

Multiply x * x
36 = 0.5(2x2)

Remove parenthesis around (2x2)
36 = 0.5 * 2x2

Multiply 0.5 * 2
36 = 1x2

Solving
36 = 1x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
36 + -1x2 = 1x2 + -1x2

Combine like terms: 1x2 + -1x2 = 0
36 + -1x2 = 0

Add '-36' to each side of the equation.
36 + -36 + -1x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -1x2 = 0 + -36
-1x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-1x2 = -36

Divide each side by '-1'.
x2 = 36

Simplifying
x2 = 36

Take the square root of each side:
x = {-6, 6}