x²-3x+4>0
Δ=(-3)²-4·1·4
Δ=9-16
Δ=-7
Δ<0 ,brak rozwiązań
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x²-3x+4>0
Δ=(-3)²-4·1·4
Δ=9-16
Δ=-7
Δ<0 ,brak rozwiązań