y=(x+2)(x-4)

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Solution for y=(x+2)(x-4) equation: 


Simplifying
y = (x + 2)(x + -4)

Reorder the terms:
y = (2 + x)(x + -4)

Reorder the terms:
y = (2 + x)(-4 + x)

Multiply (2 + x) * (-4 + x)
y = (2(-4 + x) + x(-4 + x))
y = ((-4 * 2 + x * 2) + x(-4 + x))
y = ((-8 + 2x) + x(-4 + x))
y = (-8 + 2x + (-4 * x + x * x))
y = (-8 + 2x + (-4x + x2))

Combine like terms: 2x + -4x = -2x
y = (-8 + -2x + x2)

Solving
y = -8 + -2x + x2

Solving for variable 'y'.

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

Simplifying
y = -8 + -2x + x2

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