2233332222222493(1)(2)38242210(3)593(4)()33byxbcabcxayadxyxyxyxyxyxyxyxxy检测:计算:16.2.1分式的乘除(2)(n为正整数)即:积的乘方,等于把积的每一个因式分别乘方,再把所得的幂相乘。n(ab)nnab3(2)a22(y)x33(2)x思考:23()_____()_____()_____nababab你能总结出分式乘方的法则吗?分式的乘方法则:分式乘方要把分子、分母分别乘方.()nnnaabb(n为正整数)例1.计算:32223(1)22(2)3bcaabc练习1.计算:3222322(1)33(2)4ayxcab例2:计算:23223323(1)53259532(2)2xxxxxabaccdda练习2:计算:2222223234232255(1)3431642(2)816282263(3)mnpqnppqmnqaaaaaaaabaccdbb