y=4(x-1)(x+8)

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Solution for y=4(x-1)(x+8) equation: 


Simplifying
y = 4(x + -1)(x + 8)

Reorder the terms:
y = 4(-1 + x)(x + 8)

Reorder the terms:
y = 4(-1 + x)(8 + x)

Multiply (-1 + x) * (8 + x)
y = 4(-1(8 + x) + x(8 + x))
y = 4((8 * -1 + x * -1) + x(8 + x))
y = 4((-8 + -1x) + x(8 + x))
y = 4(-8 + -1x + (8 * x + x * x))
y = 4(-8 + -1x + (8x + x2))

Combine like terms: -1x + 8x = 7x
y = 4(-8 + 7x + x2)
y = (-8 * 4 + 7x * 4 + x2 * 4)
y = (-32 + 28x + 4x2)

Solving
y = -32 + 28x + 4x2

Solving for variable 'y'.

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

Simplifying
y = -32 + 28x + 4x2

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