42329)1(2mmmmxxxx444)2()1(11)4(2aaayxyxyx))(3()3(2m4 xxyx 2)1( a 15.2.4 分式的乘除 dcba:分式的乘法dbcadcba:分式的除法cbdacdba 分式乘除bababa5254:2422计算bababa5254:2422解baabba54254222bababa5425422234232025babaabbaba45552323ab45 分式乘除dabcabdccdba324534:2222解dabcabdccdba324534:2222计算abcdabdccdba2345342222abcabcdddcba243354222222322223660dcbadbca2222222312512bdbcadbca235b 359253352:2xxxxx计算3592533522xxxxx353)35)(35(352xxxxxx322x解 :分式乘除3539253522xxxxx 分式乘除936299681:22aaaaaaa计算936299681:22aaaaaaa解93962968122aaaaaaa)9()3()9()3(2)3()9)(9(2aaaaaaa2 分式乘除2248216816:22aaaaaaa计算2248216816:22aaaaaaa解228241681622aaaaaaa)2()2()4(2)4()4()4)(4(2aaaaaaa21