數學小問題

2008-01-16 7:27 am
6分之9既3次方
答案係唔係8分之27?
點計出黎?

回答 (5)

2008-01-16 7:33 am
✔ 最佳答案
(9/6)^3
=(9^3) /(6^3)
= 729 / 216
= 27/8
or
(9/6)^3
= (3/2)^3
= (3^3)/(2^3)
= 27/8
2008-01-17 6:01 am
=6分之9乘以6分之9乘以6分之9

=216分之729

=2分之3乘以2分之3乘以2分之3

=8分之27
2008-01-16 9:58 pm
首先要說明:9 over 6 等於1.5

step 2: 1.5^3=3.375

step 3: 再化為 3又375 over 1000

step 4: 再簡3又3 over 8

step 5: 轉為假分數27 over 8,即答案!
參考: 個人經驗
2008-01-16 4:42 pm
(9/6)^3
= (3/2)^3
= (3^3)/(2^3)
= 27/8
而家問緊9/6 ge cube
唔係應該唔化簡嫁咩?!
(9/6)^3
=729/216


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