b=(x+1)(x-1)

Solution for b=(x+1)(x-1) equation:

Simplifying
b = (x + 1)(x + -1)

Reorder the terms:
b = (1 + x)(x + -1)

Reorder the terms:
b = (1 + x)(-1 + x)

Multiply (1 + x) * (-1 + x)
b = (1(-1 + x) + x(-1 + x))
b = ((-1 * 1 + x * 1) + x(-1 + x))
b = ((-1 + 1x) + x(-1 + x))
b = (-1 + 1x + (-1 * x + x * x))
b = (-1 + 1x + (-1x + x2))

Combine like terms: 1x + -1x = 0
b = (-1 + 0 + x2)
b = (-1 + x2)

Solving
b = -1 + x2

Solving for variable 'b'.

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

Simplifying
b = -1 + x2