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s2+20s+100=0.
We add all the numbers together, and all the variables
s^2+20s+100=0
a = 1; b = 20; c = +100;
Δ = b2-4ac
Δ = 202-4·1·100
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$s=\frac{-b}{2a}=\frac{-20}{2}=-10$
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