40=(x)(8-2x)(10-2x)

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Solution for 40=(x)(8-2x)(10-2x) equation: 



40=(x)(8-2x)(10-2x)

We move all terms to the left:

40-((x)(8-2x)(10-2x))=0

We add all the numbers together, and all the variables

-(x(-2x+8)(-2x+10))+40=0

We multiply parentheses ..

-(x(+4x^2-20x-16x+80))+40=0



We calculate terms in parentheses: -(x(+4x^2-20x-16x+80)), so:

x(+4x^2-20x-16x+80)

We multiply parentheses

4x^3-20x^2-16x^2+80x

We do not support expression: x^3

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