х³-13х²+22х=0
х(х²-13х+22)=0
х1=0
х²-13х+22=0
D=b²-4ac=169-4×1×22=81
х2,3=(-b±√D)/2a
x2=(13+9)/2=11
x3=(13-9)/2=2
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х³-13х²+22х=0
х(х²-13х+22)=0
х1=0
х²-13х+22=0
D=b²-4ac=169-4×1×22=81
х2,3=(-b±√D)/2a
x2=(13+9)/2=11
x3=(13-9)/2=2