-x^2-1=-65

Solution for -x^2-1=-65 equation:

Simplifying
-1x2 + -1 = -65

Reorder the terms:
-1 + -1x2 = -65

Solving
-1 + -1x2 = -65

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + -1x2 = -65 + 1

Combine like terms: -1 + 1 = 0
0 + -1x2 = -65 + 1
-1x2 = -65 + 1

Combine like terms: -65 + 1 = -64
-1x2 = -64

Divide each side by '-1'.
x2 = 64

Simplifying
x2 = 64

Take the square root of each side:
x = {-8, 8}