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s2+3s=-18
We move all terms to the left:
s2+3s-(-18)=0
We add all the numbers together, and all the variables
s^2+3s+18=0
a = 1; b = 3; c = +18;
Δ = b2-4ac
Δ = 32-4·1·18
Δ = -63
Delta is less than zero, so there is no solution for the equation
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