F(x)=3^2-4x-5

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Solution for F(x)=3^2-4x-5 equation: 



(F)=3^2-4F-5

We move all terms to the left:

(F)-(3^2-4F-5)=0

We get rid of parentheses

F+4F+5-3^2=0

We add all the numbers together, and all the variables

5F-4=0

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

5F=4

F=4/5

F=4/5

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