【最新】初中小学 1.2.15 _____ ___________ ________ __ _____ (1)

1、1.2.15 ?ga ?o?gob.tf ?gta ?9 ?99?躨?灄1: ? ?1? ?a? ? ?1? ? ?灄a? V? ?1躨躨? ?i1i?i? a? ?l? b? i? r? ?rai?i? ?1i躨 ?灄a? ?1ra? ?1i躨 ?a?1? ? ?i?a?nmVabV m.ab n?1i躨 ?a?a? ? ?1? ? ?a? ? ?躨?灄2: ? ?ii?i m ?1 a ?i? ? ?ii?i n ?1 b ?i? ? ?躨? ? ?1ii?i ? ?灄1? ? ?ii?i ? ?1灄1? ?1? ?躨躨? ?i manbnbma? ?1ii?i ? ?灄1? ?i ? ?

2、 /?1ii?i ? ?灄1? ?i? ? /?ia? ? ?1ii?i ? ?灄1? ? ?ii?i ?1? ?灄1?( )?躨躨躨躨? ?i. ?a? ? ?1?:?972592752534254321）（）（?躨? ?1? ?i? ?躨?: ?躨? ?1? ?躨? ? ?i?i? ?躨灄i?l?1i?躨 ?1灄i? ?i?躨 ?1a?耀?灄 ?躨灄i? ?1灄i? ?a?耀?灄 i?1 .?1? ?躨? ?1? ?i? ?a? ?躨?ac?bddbcadcba?dcba）（4352453254323?躨? ?1? ?a? ?躨?: ?躨? ?1? ?躨? ? ?i?a? ?a? ?躨 ?

3、 ?1a?耀?灄 ?1?1? ?1?ii?灄a? ? ?1a? ? ? i?i?.?a? ? ?1?:?cbdacdbadcba3222ab5a b(2).2c4cd?躨332442(1)=3263xyxyyxx yx.32232222542(2)=.24255aba babcdbdccdca bac1-?a? ?躨灄: ?1?1?i ?a?躨:?3234)1(xyyx222a4a4a1.a2a1 a42222(a2)a1(a1)(a2)(a2)(a2) (a1)(a1) (a2)(a2)a2.(a1)(a2)2-?a? ?躨灄. ?1?1?i ?a?躨:?mmm71491)2(227)7)(

4、7()7()7(49122mmmmmmmmm?：?：?躨? ?躨? ?1? ?a? ?i?i? ?躨 ?1?a?耀?灄 ?- ? ?a? ?i? ?.?躨? ?1? ?a? ?i? ?躨?oo?f ?0躨?2ba3ba10bannnbaaaaaaaaabababababa?a? ?躨灄: ?1?1?i ?a?躨:?42x(1) () .y 234x y2() .3w?:? 4442248xxx1 ()y(y )y； 322633334x y4x y64x y2().3w27w3w?a? ?躨灄: ?1?1?i ?a?躨:?34316x y2xy （ （） （） ； 242242222534.

5、x yx yx yx y?:? 343261xyyx34326xyyx334386yxyx3y3y44； 222242244352yxyxyxyx22224224222422x y5xy35x yx y3x y16 x y4x y2225xy3.16x?a? ?躨灄: ?1?1?i ?a?躨:?323422xyz()()() .yxxy323422xyz()()()yxxy?:?323422234( x )y(xy)(y )( x )( z)6344464xyx yy( x ) z 434x y=.z-?1?1?i ?a?躨 :? 23433xy2yx（） （）4243xyz48443x yz64912xyyx561y x 48481x yz24xy(1) ()3zi灄?躨 ?:?9? ?1.1.计算计算 等于（等于（ ）A. B. C. D.A. B. C. D.【解析解析】选选C.C.cdaxcdab4322222ab3axab4cd2b2cd4cd2cd 3ax3x xb322xb223xb322222283dcxba?1?i ?1?9?灄 ?a灄灄i:2 2. .计算计算： =_.【解析解析】答案：答案：22(ab)(ba)ab2222(ab)(ab)11(ba)abab(ab)ab1ab3 3. .计算：计算