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(F)=0.25F^2+65
We move all terms to the left:
(F)-(0.25F^2+65)=0
We get rid of parentheses
-0.25F^2+F-65=0
a = -0.25; b = 1; c = -65;
Δ = b2-4ac
Δ = 12-4·(-0.25)·(-65)
Δ = -64
Delta is less than zero, so there is no solution for the equation
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