化簡下列各題,答案以正指數表示
1)
(3a^2)^3(-2b^-2)^3
----------------------------
(-3ab^2)^2
ans=
-24a^4
-----------
b^10
2)
(3a^2)^0(a^-2b)^-1
-----------------------------
(a^-2b)^2
ans=
a^6
--------
b^3
3) (a^-1+b^-1)^-1
ans=
ab
-------
a+b
虛線果d係分數
就係呢幾題,唔該曬,萬分感激,如果唔想做曬都唔緊要嫁,幫到我就ok嫁啦
f3 math幾題(中文)
2007-10-21 10:42 pm
回答 (1)
2007-10-21 10:56 pm
✔ 最佳答案
(3a^2)^3(-2b^-2)^3----------------------------
(-3ab^2)^2
(27a^6)(-8b^-6)
---------------------
9(a^2)(b^4)
(-24a^4)(b^-10)
-24a^4
----------
b^10
(3a^2)^0(a^-2b)^-1
-----------------------------
(a^-2b)^2
(a^2)(b^-1)
-----------------
(a^-4)(b^2)
(a^6)(b^-3)
a^6
------
b^3
(a^-1+b^-1)^-1
1
-------------------------
a^-1+b^-1
1
----------------------
1/a + 1/b
1
-----------------------
(a+b)/(ab)
ab
--------------
a+b
收錄日期: 2021-04-23 19:58:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071021000051KK02417