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27m^2-36m+12=0
a = 27; b = -36; c = +12;
Δ = b2-4ac
Δ = -362-4·27·12
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$m=\frac{-b}{2a}=\frac{36}{54}=2/3$
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