y=-4(x-6)(x+3)

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Solution for y=-4(x-6)(x+3) equation: 


Simplifying
y = -4(x + -6)(x + 3)

Reorder the terms:
y = -4(-6 + x)(x + 3)

Reorder the terms:
y = -4(-6 + x)(3 + x)

Multiply (-6 + x) * (3 + x)
y = -4(-6(3 + x) + x(3 + x))
y = -4((3 * -6 + x * -6) + x(3 + x))
y = -4((-18 + -6x) + x(3 + x))
y = -4(-18 + -6x + (3 * x + x * x))
y = -4(-18 + -6x + (3x + x2))

Combine like terms: -6x + 3x = -3x
y = -4(-18 + -3x + x2)
y = (-18 * -4 + -3x * -4 + x2 * -4)
y = (72 + 12x + -4x2)

Solving
y = 72 + 12x + -4x2

Solving for variable 'y'.

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

Simplifying
y = 72 + 12x + -4x2

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