1200=x(15-2x)(20-2x)

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Solution for 1200=x(15-2x)(20-2x) equation: 



1200=x(15-2x)(20-2x)

We move all terms to the left:

1200-(x(15-2x)(20-2x))=0

We add all the numbers together, and all the variables

-(x(-2x+15)(-2x+20))+1200=0

We multiply parentheses ..

-(x(+4x^2-40x-30x+300))+1200=0



We calculate terms in parentheses: -(x(+4x^2-40x-30x+300)), so:

x(+4x^2-40x-30x+300)

We multiply parentheses

4x^3-40x^2-30x^2+300x

We do not support expression: x^3

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