y=2(x-3)(x+1)

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Solution for y=2(x-3)(x+1) equation: 


Simplifying
y = 2(x + -3)(x + 1)

Reorder the terms:
y = 2(-3 + x)(x + 1)

Reorder the terms:
y = 2(-3 + x)(1 + x)

Multiply (-3 + x) * (1 + x)
y = 2(-3(1 + x) + x(1 + x))
y = 2((1 * -3 + x * -3) + x(1 + x))
y = 2((-3 + -3x) + x(1 + x))
y = 2(-3 + -3x + (1 * x + x * x))
y = 2(-3 + -3x + (1x + x2))

Combine like terms: -3x + 1x = -2x
y = 2(-3 + -2x + x2)
y = (-3 * 2 + -2x * 2 + x2 * 2)
y = (-6 + -4x + 2x2)

Solving
y = -6 + -4x + 2x2

Solving for variable 'y'.

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

Simplifying
y = -6 + -4x + 2x2

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