F.2 maths...

2008-03-29 5:30 pm
f.2 maths
1) (3g^2)^3 =?!
2) (2H^2K^5)^4=?!

thx~~~~~~~
更新1:

7pq^2 + 6pq^2 =?!

回答 (1)

2008-03-29 5:46 pm
✔ 最佳答案
利用(a.b)^n=a^n.b^n
(3g^2)^3=3^3.g^6=27g^6

(2h^2.k^5)^4=2^4.h^8.k^20=16h^8.k^20

7pq^2+6pq^2=13pq^2


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