练习-多项式与多项式相乘VIP免费

1.计算：(1)(26)(3);(2)(3)(3).nnxyxy2=26618218nnnnn22222=3(3)3()(3)9339xxxyyxyxxyxyyxy2.计算：(1)(32)(1)(1)(2);(2)(32)(32)9(1).aaaaaaaa222=33222235232424aaaaaaaaaaaaaa223366499949994aaaaaaaaaaa3.计算：222(1)()();(2)(1)(23).xyxxyyxxx222232222333=xxxxyxyyxyxyyyxxyxyyxyxyxy2232232=(2)32323233xxxxxxxxxxxxxxx