80=(2x)x

Solution for 80=(2x)x equation:

Simplifying
80 = (2x) * x

Remove parenthesis around (2x)
80 = 2x * x

Multiply x * x
80 = 2x2

Solving
80 = 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.
80 + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
80 + -2x2 = 0

Add '-80' to each side of the equation.
80 + -80 + -2x2 = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -2x2 = 0 + -80
-2x2 = 0 + -80

Combine like terms: 0 + -80 = -80
-2x2 = -80

Divide each side by '-2'.
x2 = 40

Simplifying
x2 = 40

Take the square root of each side:
x = {-6.32455532, 6.32455532}