99math

1、1高中數(shù)學(xué)銜接教材第一單元指數(shù)A.基本性質(zhì)：1.，其中稱為底數(shù)，稱為指數(shù)?！纠浚簄naaaaa???????????個(gè)an44555555?????????個(gè)連乘2.常用公式：(1)【例】：mnmnaaa???434375555????(2)【例】：()mnmnaa?23236(5)55???(3)()nnnabab?(4)；01(0)aa??1(0)nnaaa???(5)【例】：0mmnmnnaaaaaa?????442225555

2、5555555????????【例】：335252555515555555555????????????(6)()(0)nnnaabbb??(7)(01)mnaamna?????B.範(fàn)例：【例1】化簡(jiǎn)下列各式：(1)(2)3224(2)()()aaaa??????3223(2)()aabab????(3)(4)22322()()aababb??322232()()abab??（答）：(1)(2)(3)(4)128a?6724ab?3ab

3、23ba【類題】化簡(jiǎn)下列各式：(1)(2)(3)3234()()aaa???32243(2)(3)()ababab???2332()()abab?3（答）：1.(1)(2)(3)(4)(5)716a?7894abc?1269ab43163ab?875256abc?2.(1)(2)(3)(4)3.4.33ab?8ab4418ab46abc429210?第二單元乘法公式A.基本性質(zhì)：1.()abcabac???2.22()()ababab?

4、???3.222()2abaabb????4.2222()222abcabcabbcca????????5.33223()33abaababb?????6.2233()()abaabbab?????7.2233()()abaabbab?????8.22224224()()aabbaabbaabb???????9.222333()()3abcabcabbccaabcabc???????????10.12(1)(1)1nnnxxxxx???

5、???????11.12(1)(1)1()nnnxxxxxn??????????為奇數(shù)B.範(fàn)例：【例1】展開(kāi)下列各式：(1)(2)(3)(4)(5)2(23)a?2(32)a?(21)(21)aa??31(2)3a?3(23)ab?(6)(7)22(1)(1)(1)(1)aaaaaa???????2224(32)(964)abaabb???(8)(9)2222(24)(24)aabbaabb????222(2)(422)abcabcab