22*22+66*66=x*x

Solution for 22*22+66*66=x*x equation:

Simplifying
22 * 22 + 66 * 66 = x * x

Multiply 22 * 22
484 + 66 * 66 = x * x

Multiply 66 * 66
484 + 4356 = x * x

Combine like terms: 484 + 4356 = 4840
4840 = x * x

Multiply x * x
4840 = x2

Solving
4840 = 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.
4840 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4840 + -1x2 = 0

Add '-4840' to each side of the equation.
4840 + -4840 + -1x2 = 0 + -4840

Combine like terms: 4840 + -4840 = 0
0 + -1x2 = 0 + -4840
-1x2 = 0 + -4840

Combine like terms: 0 + -4840 = -4840
-1x2 = -4840

Divide each side by '-1'.
x2 = 4840

Simplifying
x2 = 4840

Take the square root of each side:
x = {-69.570108524, 69.570108524}