若(3x^2y-2xy^2)/M=-3x+2,则单项式M等于( ) A.xy B.-xy C.x D.-y
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若(3x^2y-2xy^2)/M=-3x+2,则单项式M等于( ) A.xy B.-xy C.x D.-y
若(3x^2y-2xy^2)/M=-3x+2,则单项式M等于( ) A.xy B.-xy C.x D.-y
若(3x^2y-2xy^2)/M=-3x+2,则单项式M等于( ) A.xy B.-xy C.x D.-y
题目最后应该加上一个y
若(3x^2y-2xy^2)/M=-3x+2y
M=(3x^2y-2xy^2)/(-3x+2y)=-xy
答案:B.-xy
题目有问题
3x^2y-2xy^2=xy(3x-2y)=-xy(-3x+2y)
所以选B
你稍炒了一个y
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