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(F)=6F^2+72
We move all terms to the left:
(F)-(6F^2+72)=0
We get rid of parentheses
-6F^2+F-72=0
a = -6; b = 1; c = -72;
Δ = b2-4ac
Δ = 12-4·(-6)·(-72)
Δ = -1727
Delta is less than zero, so there is no solution for the equation
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