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mx²+4m+m+3 >0
Dla m=0
m+3>0
3 > 0 nierownosc jest spelniona.
Δ=16m²-4m(m+3)<0
16m²-4²m-12m<0
12m²-12m<0
12m(m-1)<0
m∈(0,1) u {0}
Odp. m∈<0,1)