F(x)=(x-3)(x+3)

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



(F)=(F-3)(F+3)

We move all terms to the left:

(F)-((F-3)(F+3))=0

We use the square of the difference formula

F^2+F+9=0

a = 1; b = 1; c = +9;
Δ = b2-4ac
Δ = 12-4·1·9
Δ = -35
Delta is less than zero, so there is no solution for the equation

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