Y=(x-4)(x+2)

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Solution for Y=(x-4)(x+2) equation: 


Simplifying
Y = (x + -4)(x + 2)

Reorder the terms:
Y = (-4 + x)(x + 2)

Reorder the terms:
Y = (-4 + x)(2 + x)

Multiply (-4 + x) * (2 + x)
Y = (-4(2 + x) + x(2 + x))
Y = ((2 * -4 + x * -4) + x(2 + x))
Y = ((-8 + -4x) + x(2 + x))
Y = (-8 + -4x + (2 * x + x * x))
Y = (-8 + -4x + (2x + x2))

Combine like terms: -4x + 2x = -2x
Y = (-8 + -2x + x2)

Solving
Y = -8 + -2x + x2

Solving for variable 'Y'.

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

Simplifying
Y = -8 + -2x + x2

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