y=2(x+1)(x-2)

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Solution for y=2(x+1)(x-2) equation: 


Simplifying
y = 2(x + 1)(x + -2)

Reorder the terms:
y = 2(1 + x)(x + -2)

Reorder the terms:
y = 2(1 + x)(-2 + x)

Multiply (1 + x) * (-2 + x)
y = 2(1(-2 + x) + x(-2 + x))
y = 2((-2 * 1 + x * 1) + x(-2 + x))
y = 2((-2 + 1x) + x(-2 + x))
y = 2(-2 + 1x + (-2 * x + x * x))
y = 2(-2 + 1x + (-2x + x2))

Combine like terms: 1x + -2x = -1x
y = 2(-2 + -1x + x2)
y = (-2 * 2 + -1x * 2 + x2 * 2)
y = (-4 + -2x + 2x2)

Solving
y = -4 + -2x + 2x2

Solving for variable 'y'.

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

Simplifying
y = -4 + -2x + 2x2

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