合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m合并同类项3a-5a+6ax^2y+ax^2y-6x^2y-3mn^2+8m^2n-7mn^2+m^2n
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合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m合并同类项3a-5a+6ax^2y+ax^2y-6x^2y-3mn^2+8m^2n-7mn^2+m^2n
合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m
合并同类项
3a-5a+6a
x^2y+ax^2y-6x^2y
-3mn^2+8m^2n-7mn^2+m^2n
合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m合并同类项3a-5a+6ax^2y+ax^2y-6x^2y-3mn^2+8m^2n-7mn^2+m^2n
=4a
把(x-y),(a+b)作为一个因式,合并同类项把(x-y),(a+b)作为一个因式,合并同类项。 (1)3(x-y)^2-9(x-y)-8(x-y)^2+6(x-y)-1 (2)2(a+b)-5/8(a+b)^2-2/3(a+b)+3(a+b)^2+2
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合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m合并同类项3a-5a+6ax^2y+ax^2y-6x^2y-3mn^2+8m^2n-7mn^2+m^2n
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