Rozwiąż nierówność : x²+11x+30≤0
Δ=121-4*1*30
Δ=1
√Δ=1
x1=-6
x2=-5
szkic paraboli, ramiona do góry
x∈<-6,-5>
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Δ=121-4*1*30
Δ=1
√Δ=1
x1=-6
x2=-5
szkic paraboli, ramiona do góry
x∈<-6,-5>