F.3 Maths Law of Indices 急急急!!
2012-09-29 6:22 am
Simplify the following expressions, and express the answer with positive indices: ((a+k)/k^2)^3
回答 (3)
2012-09-29 7:18 am
✔ 最佳答案
[(a + k) / k²)³= (a + k)³ / (k²)³
= (a + k)³ / k⁶
= (a³ + 3a²k + 2ak² + k³) / k⁶
2012-09-30 01:12:18 補充：
There is a typo :
The last line should be "= a^3 + 3a^2k + 3ak^2 + k^3) / k^6".
參考: andrew, andrew
2012-09-29 5:59 pm
樓上3ak^2 打錯左做2ak^2
2012-09-29 6:29 am
((a+k)/k^2)^3
This already contain no negative index.
This already contain no negative index.
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