(-x^2-1)=0

Solution for (-x^2-1)=0 equation:

Simplifying
(-1x2 + -1) = 0

Reorder the terms:
(-1 + -1x2) = 0

Remove parenthesis around (-1 + -1x2)
-1 + -1x2 = 0

Solving
-1 + -1x2 = 0

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 = 0 + 1

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

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

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

Simplifying
x2 = -1

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

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

The solution to this equation could not be determined.