x²+(3m-2)x+(m+2)=0
Δ=(3m-2)²-4(m+2)=9m²-12m+4-4m-8=9m²-16m-4
Δm=256+144
√Δm=20
m₁=2 m₂=-²/₉
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x²+(3m-2)x+(m+2)=0
Δ=(3m-2)²-4(m+2)=9m²-12m+4-4m-8=9m²-16m-4
Δm=256+144
√Δm=20
m₁=2 m₂=-²/₉