下列是最简分式的是:A.m-1\1-mB.xy-y\3xyC.x-y\x^2-y^2D.-61m\32m
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![下列是最简分式的是:A.m-1\1-mB.xy-y\3xyC.x-y\x^2-y^2D.-61m\32m](/uploads/image/z/7616607-15-7.jpg?t=%E4%B8%8B%E5%88%97%E6%98%AF%E6%9C%80%E7%AE%80%E5%88%86%E5%BC%8F%E7%9A%84%E6%98%AF%3AA.m-1%5C1-mB.xy-y%5C3xyC.x-y%5Cx%5E2-y%5E2D.-61m%5C32m)
下列是最简分式的是:A.m-1\1-mB.xy-y\3xyC.x-y\x^2-y^2D.-61m\32m
下列是最简分式的是:
A.m-1\1-m
B.xy-y\3xy
C.x-y\x^2-y^2
D.-61m\32m
下列是最简分式的是:A.m-1\1-mB.xy-y\3xyC.x-y\x^2-y^2D.-61m\32m
B