Y=-3(x+1)(x-3)

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


Simplifying
Y = -3(x + 1)(x + -3)

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

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

Multiply (1 + x) * (-3 + x)
Y = -3(1(-3 + x) + x(-3 + x))
Y = -3((-3 * 1 + x * 1) + x(-3 + x))
Y = -3((-3 + 1x) + x(-3 + x))
Y = -3(-3 + 1x + (-3 * x + x * x))
Y = -3(-3 + 1x + (-3x + x2))

Combine like terms: 1x + -3x = -2x
Y = -3(-3 + -2x + x2)
Y = (-3 * -3 + -2x * -3 + x2 * -3)
Y = (9 + 6x + -3x2)

Solving
Y = 9 + 6x + -3x2

Solving for variable 'Y'.

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

Simplifying
Y = 9 + 6x + -3x2

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