x(x²+9x+18)=0
1) x=0
2) D=81-4*18*1=9
x=(-9-3)/2=-6
x=(-9+3)/2=-3
Ответ: 0; - 3; - 6
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x(x²+9x+18)=0
1) x=0
2) D=81-4*18*1=9
x=(-9-3)/2=-6
x=(-9+3)/2=-3
Ответ: 0; - 3; - 6