y=4(x+7)(x-4)

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Solution for y=4(x+7)(x-4) equation: 


Simplifying
y = 4(x + 7)(x + -4)

Reorder the terms:
y = 4(7 + x)(x + -4)

Reorder the terms:
y = 4(7 + x)(-4 + x)

Multiply (7 + x) * (-4 + x)
y = 4(7(-4 + x) + x(-4 + x))
y = 4((-4 * 7 + x * 7) + x(-4 + x))
y = 4((-28 + 7x) + x(-4 + x))
y = 4(-28 + 7x + (-4 * x + x * x))
y = 4(-28 + 7x + (-4x + x2))

Combine like terms: 7x + -4x = 3x
y = 4(-28 + 3x + x2)
y = (-28 * 4 + 3x * 4 + x2 * 4)
y = (-112 + 12x + 4x2)

Solving
y = -112 + 12x + 4x2

Solving for variable 'y'.

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

Simplifying
y = -112 + 12x + 4x2

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