y=-1.5(x+20)(x+20)

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Solution for y=-1.5(x+20)(x+20) equation: 


Simplifying
y = -1.5(x + 20)(x + 20)

Reorder the terms:
y = -1.5(20 + x)(x + 20)

Reorder the terms:
y = -1.5(20 + x)(20 + x)

Multiply (20 + x) * (20 + x)
y = -1.5(20(20 + x) + x(20 + x))
y = -1.5((20 * 20 + x * 20) + x(20 + x))
y = -1.5((400 + 20x) + x(20 + x))
y = -1.5(400 + 20x + (20 * x + x * x))
y = -1.5(400 + 20x + (20x + x2))

Combine like terms: 20x + 20x = 40x
y = -1.5(400 + 40x + x2)
y = (400 * -1.5 + 40x * -1.5 + x2 * -1.5)
y = (-600 + -60x + -1.5x2)

Solving
y = -600 + -60x + -1.5x2

Solving for variable 'y'.

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

Simplifying
y = -600 + -60x + -1.5x2

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