4*4+8*8=x*x

Solution for 4*4+8*8=x*x equation:

Simplifying
4 * 4 + 8 * 8 = x * x

Multiply 4 * 4
16 + 8 * 8 = x * x

Multiply 8 * 8
16 + 64 = x * x

Combine like terms: 16 + 64 = 80
80 = x * x

Multiply x * x
80 = x2

Solving
80 = 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.
80 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
80 + -1x2 = 0

Add '-80' to each side of the equation.
80 + -80 + -1x2 = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -1x2 = 0 + -80
-1x2 = 0 + -80

Combine like terms: 0 + -80 = -80
-1x2 = -80

Divide each side by '-1'.
x2 = 80

Simplifying
x2 = 80

Take the square root of each side:
x = {-8.94427191, 8.94427191}