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(F)=(F-1)2+4
We move all terms to the left:
(F)-((F-1)2+4)=0
We calculate terms in parentheses: -((F-1)2+4), so:We get rid of parentheses
(F-1)2+4
We multiply parentheses
2F-2+4
We add all the numbers together, and all the variables
2F+2
Back to the equation:
-(2F+2)
F-2F-2=0
We add all the numbers together, and all the variables
-1F-2=0
We move all terms containing F to the left, all other terms to the right
-F=2
F=2/-1
F=-2
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