(X-1)(X+1)=10

Solution for (X-1)(X+1)=10 equation:

Simplifying
(X + -1)(X + 1) = 10

Reorder the terms:
(-1 + X)(X + 1) = 10

Reorder the terms:
(-1 + X)(1 + X) = 10

Multiply (-1 + X) * (1 + X)
(-1(1 + X) + X(1 + X)) = 10
((1 * -1 + X * -1) + X(1 + X)) = 10
((-1 + -1X) + X(1 + X)) = 10
(-1 + -1X + (1 * X + X * X)) = 10
(-1 + -1X + (1X + X2)) = 10

Combine like terms: -1X + 1X = 0
(-1 + 0 + X2) = 10
(-1 + X2) = 10

Solving
-1 + X2 = 10

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 + X2 = 10 + 1

Combine like terms: -1 + 1 = 0
0 + X2 = 10 + 1
X2 = 10 + 1

Combine like terms: 10 + 1 = 11
X2 = 11

Simplifying
X2 = 11

Take the square root of each side:
X = {-3.31662479, 3.31662479}