已知实数abc满足a=6-b,c^2=ab-9,求abc

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已知实数abc满足a=6-b,c^2=ab-9,求abc已知实数abc满足a=6-b,c^2=ab-9,求abc已知实数abc满足a=6-b,c^2=ab-9,求abcc^2=ab-9=(6-b)*b

已知实数abc满足a=6-b,c^2=ab-9,求abc
已知实数abc满足a=6-b,c^2=ab-9,求abc

已知实数abc满足a=6-b,c^2=ab-9,求abc
c^2=ab-9=(6-b)*b-9>=0
b^2-6b+9<=0
(b-3)^2<=0
因为(b-3)^2>=0
so(b-3)^2=0
sob=3
a=6-3=3
c=0
所以a=3
b=3
c=0
abc=0