F(x)=(x.x)-2x-8

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Solution for F(x)=(x.x)-2x-8 equation: 



(F)=(F.F)-2F-8

We move all terms to the left:

(F)-((F.F)-2F-8)=0

We add all the numbers together, and all the variables

F-((+F.F)-2F-8)=0



We calculate terms in parentheses: -((+F.F)-2F-8), so:

(+F.F)-2F-8

We add all the numbers together, and all the variables

-2F+(+F.F)-8

We get rid of parentheses

-2F+F.F-8

Back to the equation:

-(-2F+F.F-8)



We get rid of parentheses

F+2F-F.F+8=0

We add all the numbers together, and all the variables

3F-F.F+8=0

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

3F-F.F=-8

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