x*x-144=0

Solution for x*x-144=0 equation:

Simplifying
x * x + -144 = 0

Multiply x * x
x2 + -144 = 0

Reorder the terms:
-144 + x2 = 0

Solving
-144 + x2 = 0

Solving for variable 'x'.

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

Add '144' to each side of the equation.
-144 + 144 + x2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + x2 = 0 + 144
x2 = 0 + 144

Combine like terms: 0 + 144 = 144
x2 = 144

Simplifying
x2 = 144

Take the square root of each side:
x = {-12, 12}