F.1 Maths題,急

🎓 學業台小學及中學教育

用戶159403

2011-02-11 7:56 pm

a^3乘b^m a
If --------------- = ---------- , where m and n are positive intergers.
a^n乘b^7 b^2

1
Find the value of -------------------------
a^2(m-n)

答案是16分之1.我想知WHY,請比埋條式.謝^^.

更新1:

答案是m=5,n=2 問題係find the value of m and n. 我識做啦,找個人回答,我比點比他

回答 (3)

Katy :D

2011-02-13 9:34 pm

✔ 最佳答案

ask ur teacher - -

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用戶159403

2011-02-11 10:46 pm

唔明啊= =有冇人可以答到我~~

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ShikaP

2011-02-11 8:08 pm

a^3*b^m/(a^n*b^7)=a/b^2
(a^3/a^2)*(b^m/b^7)=a/b^2
a^(3-n)*b^(m-7)=a/b^2
b^(m-5)=a^(n-2)

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收錄日期: 2021-04-23 20:47:39
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