[F. 3 Maths] Rational Indices - 10 points (2 questions)

2007-09-02 10:16 pm
[F. 3 Maths] Rational Indices - 10 points (2 questions)

Questions:

Express with positive indices and without root signs:

http://i143.photobucket.com/albums/r153/ken100605/2f01e8cf.jpg

Please show the steps and the explanations clearly.

回答 (1)

2007-09-02 11:04 pm
✔ 最佳答案
(1) x^2.4x^(-1/2) = 4x^(2-1/2) = 4x^(3/2)

(2) Question = [2a^5/32a^(-3)]^(1/4)
={a^[5-(-3)]/16}^(1/4)
=(a^8/16)^(1/4)
=a^2/2
參考: me


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