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60x-18-50x^2=0
a = -50; b = 60; c = -18;
Δ = b2-4ac
Δ = 602-4·(-50)·(-18)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{-60}{-100}=3/5$
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