(s-1)(s+1)=

Solution for (s-1)(s+1)= equation:

Simplifying
(s + -1)(s + 1) = 0

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

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

Multiply (-1 + s) * (1 + s)
(-1(1 + s) + s(1 + s)) = 0
((1 * -1 + s * -1) + s(1 + s)) = 0
((-1 + -1s) + s(1 + s)) = 0
(-1 + -1s + (1 * s + s * s)) = 0
(-1 + -1s + (1s + s2)) = 0

Combine like terms: -1s + 1s = 0
(-1 + 0 + s2) = 0
(-1 + s2) = 0

Solving
-1 + s2 = 0

Solving for variable 's'.

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

Add '1' to each side of the equation.
-1 + 1 + s2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + s2 = 0 + 1
s2 = 0 + 1

Combine like terms: 0 + 1 = 1
s2 = 1

Simplifying
s2 = 1

Take the square root of each side:
s = {-1, 1}