2*8=x*x

Solution for 2*8=x*x equation:

Simplifying
2 * 8 = x * x

Multiply 2 * 8
16 = x * x

Multiply x * x
16 = x2

Solving
16 = x2

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.
16 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
16 + -1x2 = 0

Add '-16' to each side of the equation.
16 + -16 + -1x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -1x2 = 0 + -16
-1x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-1x2 = -16

Divide each side by '-1'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}