y=(x+1)(x-1)

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


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

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

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

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

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

Solving
y = -1 + x2

Solving for variable 'y'.

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

Simplifying
y = -1 + x2

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