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5x^2-10x+5=0
a = 5; b = -10; c = +5;
Δ = b2-4ac
Δ = -102-4·5·5
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{10}{10}=1$
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