15x^2-120x+240=0

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Solution for 15x^2-120x+240=0 equation: 



15x^2-120x+240=0

a = 15; b = -120; c = +240;
Δ = b2-4ac
Δ = -1202-4·15·240
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{120}{30}=4$

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