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(F)=2F^2+4
We move all terms to the left:
(F)-(2F^2+4)=0
We get rid of parentheses
-2F^2+F-4=0
a = -2; b = 1; c = -4;
Δ = b2-4ac
Δ = 12-4·(-2)·(-4)
Δ = -31
Delta is less than zero, so there is no solution for the equation
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