400=(25-2x)(15-2x)x

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Solution for 400=(25-2x)(15-2x)x equation: 



400=(25-2x)(15-2x)x

We move all terms to the left:

400-((25-2x)(15-2x)x)=0

We add all the numbers together, and all the variables

-((-2x+25)(-2x+15)x)+400=0

We multiply parentheses ..

-((+4x^2-30x-50x+375)x)+400=0



We calculate terms in parentheses: -((+4x^2-30x-50x+375)x), so:

(+4x^2-30x-50x+375)x

We multiply parentheses

4x^3-30x^2-50x^2+375x

We do not support expression: x^3

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