142=x*x-2

Solution for 142=x*x-2 equation:

Simplifying
142 = x * x + -2

Multiply x * x
142 = x2 + -2

Reorder the terms:
142 = -2 + x2

Solving
142 = -2 + 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.
142 + -1x2 = -2 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
142 + -1x2 = -2 + 0
142 + -1x2 = -2

Add '-142' to each side of the equation.
142 + -142 + -1x2 = -2 + -142

Combine like terms: 142 + -142 = 0
0 + -1x2 = -2 + -142
-1x2 = -2 + -142

Combine like terms: -2 + -142 = -144
-1x2 = -144

Divide each side by '-1'.
x2 = 144

Simplifying
x2 = 144

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