y=x(x-2)(x+2)

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Solution for y=x(x-2)(x+2) equation: 


Simplifying
y = x(x + -2)(x + 2)

Reorder the terms:
y = x(-2 + x)(x + 2)

Reorder the terms:
y = x(-2 + x)(2 + x)

Multiply (-2 + x) * (2 + x)
y = x(-2(2 + x) + x(2 + x))
y = x((2 * -2 + x * -2) + x(2 + x))
y = x((-4 + -2x) + x(2 + x))
y = x(-4 + -2x + (2 * x + x * x))
y = x(-4 + -2x + (2x + x2))

Combine like terms: -2x + 2x = 0
y = x(-4 + 0 + x2)
y = x(-4 + x2)
y = (-4 * x + x2 * x)
y = (-4x + x3)

Solving
y = -4x + x3

Solving for variable 'y'.

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

Simplifying
y = -4x + x3

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