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b^2-6b+20=-3
We move all terms to the left:
b^2-6b+20-(-3)=0
We add all the numbers together, and all the variables
b^2-6b+23=0
a = 1; b = -6; c = +23;
Δ = b2-4ac
Δ = -62-4·1·23
Δ = -56
Delta is less than zero, so there is no solution for the equation
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