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(F)=5F^2+20F+20
We move all terms to the left:
(F)-(5F^2+20F+20)=0
We get rid of parentheses
-5F^2+F-20F-20=0
We add all the numbers together, and all the variables
-5F^2-19F-20=0
a = -5; b = -19; c = -20;
Δ = b2-4ac
Δ = -192-4·(-5)·(-20)
Δ = -39
Delta is less than zero, so there is no solution for the equation
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