Y=3(.5X-4)(4-20X)

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Solution for Y=3(.5X-4)(4-20X) equation: 


Simplifying
Y = 3(0.5X + -4)(4 + -20X)

Reorder the terms:
Y = 3(-4 + 0.5X)(4 + -20X)

Multiply (-4 + 0.5X) * (4 + -20X)
Y = 3(-4(4 + -20X) + 0.5X * (4 + -20X))
Y = 3((4 * -4 + -20X * -4) + 0.5X * (4 + -20X))
Y = 3((-16 + 80X) + 0.5X * (4 + -20X))
Y = 3(-16 + 80X + (4 * 0.5X + -20X * 0.5X))
Y = 3(-16 + 80X + (2X + -10X2))

Combine like terms: 80X + 2X = 82X
Y = 3(-16 + 82X + -10X2)
Y = (-16 * 3 + 82X * 3 + -10X2 * 3)
Y = (-48 + 246X + -30X2)

Solving
Y = -48 + 246X + -30X2

Solving for variable 'Y'.

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

Simplifying
Y = -48 + 246X + -30X2

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