y=-2(x-2)(x-2)

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Solution for y=-2(x-2)(x-2) equation: 


Simplifying
y = -2(x + -2)(x + -2)

Reorder the terms:
y = -2(-2 + x)(x + -2)

Reorder the terms:
y = -2(-2 + x)(-2 + x)

Multiply (-2 + x) * (-2 + x)
y = -2(-2(-2 + x) + x(-2 + x))
y = -2((-2 * -2 + x * -2) + x(-2 + x))
y = -2((4 + -2x) + x(-2 + x))
y = -2(4 + -2x + (-2 * x + x * x))
y = -2(4 + -2x + (-2x + x2))

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

Solving
y = -8 + 8x + -2x2

Solving for variable 'y'.

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

Simplifying
y = -8 + 8x + -2x2

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