y=(30-2x)*(42-2x)*x

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Solution for y=(30-2x)*(42-2x)*x equation: 


Simplifying
y = (30 + -2x)(42 + -2x) * x

Reorder the terms for easier multiplication:
y = x(30 + -2x)(42 + -2x)

Multiply (30 + -2x) * (42 + -2x)
y = x(30(42 + -2x) + -2x * (42 + -2x))
y = x((42 * 30 + -2x * 30) + -2x * (42 + -2x))
y = x((1260 + -60x) + -2x * (42 + -2x))
y = x(1260 + -60x + (42 * -2x + -2x * -2x))
y = x(1260 + -60x + (-84x + 4x2))

Combine like terms: -60x + -84x = -144x
y = x(1260 + -144x + 4x2)
y = (1260 * x + -144x * x + 4x2 * x)
y = (1260x + -144x2 + 4x3)

Solving
y = 1260x + -144x2 + 4x3

Solving for variable 'y'.

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

Simplifying
y = 1260x + -144x2 + 4x3

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