F(x)=(x-20)3

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Solution for F(x)=(x-20)3 equation: 



(F)=(F-20)3

We move all terms to the left:

(F)-((F-20)3)=0



We calculate terms in parentheses: -((F-20)3), so:

(F-20)3

We multiply parentheses

3F-60

Back to the equation:

-(3F-60)



We get rid of parentheses

F-3F+60=0

We add all the numbers together, and all the variables

-2F+60=0

We move all terms containing F to the left, all other terms to the right

-2F=-60

F=-60/-2

F=+30

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