-s^2-s=0

Solution for -s^2-s=0 equation:

Simplifying
-1s2 + -1s = 0

Reorder the terms:
-1s + -1s2 = 0

Solving
-1s + -1s2 = 0

Solving for variable 's'.

Factor out the Greatest Common Factor (GCF), '-1s'.
-1s(1 + s) = 0

Ignore the factor -1.
Subproblem 1
Set the factor 's' equal to zero and attempt to solve:

Simplifying
s = 0

Solving
s = 0

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

Simplifying
s = 0
Subproblem 2
Set the factor '(1 + s)' equal to zero and attempt to solve:

Simplifying
1 + s = 0

Solving
1 + s = 0

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

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

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

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

Simplifying
s = -1
Solution
s = {0, -1}