题目是不是有问题?
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a^2/bc+(b^2/ac)+(c^2/ab)
=a^3/abc+(b^3/abc)+(c^3/abc)
=(a^3+b^3+c^3)/abc
=[(a^3+b^3+c^3-3abc)+3abc]/abc
=(a^3+b^3+c^3-3abc)/abc+3
=(a+b+c)(a^2+b^2+c^2-ab-bc-ac)/abc+3
=0/abc+3
=3
选A