-x^2-18-90=0

Solution for -x^2-18-90=0 equation:

Simplifying
-1x2 + -18 + -90 = 0

Reorder the terms:
-18 + -90 + -1x2 = 0

Combine like terms: -18 + -90 = -108
-108 + -1x2 = 0

Solving
-108 + -1x2 = 0

Solving for variable 'x'.

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

Add '108' to each side of the equation.
-108 + 108 + -1x2 = 0 + 108

Combine like terms: -108 + 108 = 0
0 + -1x2 = 0 + 108
-1x2 = 0 + 108

Combine like terms: 0 + 108 = 108
-1x2 = 108

Divide each side by '-1'.
x2 = -108

Simplifying
x2 = -108

Reorder the terms:
108 + x2 = -108 + 108

Combine like terms: -108 + 108 = 0
108 + x2 = 0

The solution to this equation could not be determined.