Rozwiąż nierówność : -3x²+2x-1<0
Δ= 4 - 12 = -8 < 0
x = -2/-6 = 1/3
x ∈ ( - ∞ ; 1/3) u ( 1/3 ; + ∞)
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Δ= 4 - 12 = -8 < 0
x = -2/-6 = 1/3
x ∈ ( - ∞ ; 1/3) u ( 1/3 ; + ∞)