y=x(30-2x)(20-x)

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Solution for y=x(30-2x)(20-x) equation: 


Simplifying
y = x(30 + -2x)(20 + -1x)

Multiply (30 + -2x) * (20 + -1x)
y = x(30(20 + -1x) + -2x * (20 + -1x))
y = x((20 * 30 + -1x * 30) + -2x * (20 + -1x))
y = x((600 + -30x) + -2x * (20 + -1x))
y = x(600 + -30x + (20 * -2x + -1x * -2x))
y = x(600 + -30x + (-40x + 2x2))

Combine like terms: -30x + -40x = -70x
y = x(600 + -70x + 2x2)
y = (600 * x + -70x * x + 2x2 * x)
y = (600x + -70x2 + 2x3)

Solving
y = 600x + -70x2 + 2x3

Solving for variable 'y'.

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

Simplifying
y = 600x + -70x2 + 2x3

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