F(x)=x(x)+2x

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Solution for F(x)=x(x)+2x equation: 



(F)=F(F)+2F

We move all terms to the left:

(F)-(F(F)+2F)=0

We add all the numbers together, and all the variables

F-(+2F+FF)=0

We get rid of parentheses

F-2F-FF=0

We add all the numbers together, and all the variables

-1F-FF=0

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