1、abbabaabbabababaxxyabyxyxxa31,53,2,2,5,4,28,18242222222)(2224242812427424281242742428248)(2122428124274383123812)(320124274?323563251884818355325351)()()()()()(5452252185081)(4827122)(12545203)(22252332333452555350501.)(与与18122与与)(bba232与与)(aa153与与)(abab32324与与)(458029161)()(xxxx9161)(xx34x)(34 x745
2、802)(5354534)(532411821821)(68132221242)(32411821821)(22232421234)(22968132221242)(6241632221622412161322)()(243635031031033975232737521)(22329223232622318722)(2215P16练习练习1题题P17习题习题1题题483271412242713112310125240321878251)()()()(（3）合并同类二次根式。）合并同类二次根式。一化二找三合并二次根式加减法的步骤：二次根式加减法的步骤：（1）将每个二次根式化为最简二次根式；）将每个二次根式化为最简二次根式；（2）找出其中的同类二次根式；）找出其中的同类二次根式；交流归纳天道酬勤
