1、 完成下列各题：?242)1(2 xxx?131112)2(xxxxxx2222242xxxxxx .113121312 xxxxxxxxxx)(321hvv)321(23.23)321(vvvvvv或 异分母分式加减法学习目标：?20153:如如?413 aa比如比如 aa413aa41443 .41341412aaa aa413aaaaa 4443224412aaaa 2413aa;413a aa413aa41443 .41341412aaa aa413aaaaa 4443224412aaaa 2413aa;413a 例解()()211-1 22635aba babbcabb+计算：()1
2、1126abbc+366caabcabc=+36acabc+=()2-235aba babb+225()3()1515b abababab+-=+222553315abbaabab+-=22232515aabbab+=怎么解答呢？怎么解答呢？()()12111 2yxrrxy+计算：()211212121212111rrrrrrr rr rr r+=+=()22222yxyxyxxyxyxyxy=计算:.121112;32912122xxxxmm()()224211-2-22-mxxmn mn+计算：()2422121-22-4xxxx+()222212-mnmn mnmn=+.,25)2(545的值求）（已知BAxBxAxxx课堂总结课堂总结本节课，你有什么收获？我们一起分享.23321)2(vvv;)(321)1(hvv ;353233hvvv 原式原式 .61696466hvvvv 原原式式
