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(-4)=F2-3F+9
We move all terms to the left:
(-4)-(F2-3F+9)=0
We add all the numbers together, and all the variables
-(+F^2-3F+9)+(-4)=0
We add all the numbers together, and all the variables
-(+F^2-3F+9)-4=0
We get rid of parentheses
-F^2+3F-9-4=0
We add all the numbers together, and all the variables
-1F^2+3F-13=0
a = -1; b = 3; c = -13;
Δ = b2-4ac
Δ = 32-4·(-1)·(-13)
Δ = -43
Delta is less than zero, so there is no solution for the equation
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