С^2-3с+2с-6=0
с^2-с-6=0
Д=1-4×(-6)=25=5^2
С1=1+5/2=3
С2=1-5/2=-2
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С^2-3с+2с-6=0
с^2-с-6=0
Д=1-4×(-6)=25=5^2
С1=1+5/2=3
С2=1-5/2=-2