V=(21-2x)(30-2x)(x)

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Solution for V=(21-2x)(30-2x)(x) equation: 



=(21-2V)(30-2V)(V)

We move all terms to the left:

-((21-2V)(30-2V)(V))=0

We add all the numbers together, and all the variables

-((-2V+21)(-2V+30)V)=0

We multiply parentheses ..

-((+4V^2-60V-42V+630)V)=0



We calculate terms in parentheses: -((+4V^2-60V-42V+630)V), so:

(+4V^2-60V-42V+630)V

We multiply parentheses

4V^3-60V^2-42V^2+630V

We do not support eVpression: V^3

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