^n 等於n次方
# 1 開括27份之8關括的(負2/3)次方
點計~?
#2 下面呢個化簡佢.仲要用正指數表示
(16a^3 b^2)^3/2
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b^-2/3 乘 2的立方根
中三數
兩題數..幫幫忙T^T
2006-12-05 12:45 am
回答 (1)
2006-12-05 12:55 am
✔ 最佳答案
1)(8/27)^(-2/3) = (27/8)^(2/3) = (3^3/2^3)^(2/3) = (3^2/2^2) = 9/4
2)
[(16a^3 X b^2)^(3/2)]/(2^3)b^(-2/3) = [16a^(9/2) b^3 b^(2/3)]/8
=2a^(9/2) b^(11/3)
收錄日期: 2021-05-03 05:57:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061204000051KK02064