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245x^2+45+210x=0
a = 245; b = 210; c = +45;
Δ = b2-4ac
Δ = 2102-4·245·45
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{-210}{490}=-3/7$
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