If , simplify

I couldn't do anything else after getting rid of the square roots..

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- Jan 9th 2010, 07:31 PMPunchSimplifying
If , simplify

I couldn't do anything else after getting rid of the square roots.. - Jan 9th 2010, 07:46 PMProve It
- Jan 9th 2010, 07:49 PMPunch
Erm, sorry but the answer in the textbook is

- Jan 9th 2010, 07:56 PMProve It
Then the original question should have been

. - Jan 9th 2010, 08:03 PMPunch
- Jan 9th 2010, 08:06 PMPunch
And if the answer provided in the book is wrong, i would like to ask if the step to solving such questions with a square root in another square root is to solve the square roots one by one before combining them all?

- Jan 9th 2010, 08:10 PMProve It
- Jan 9th 2010, 08:12 PMPunch
i think that this question is the toughest question i have met in this chapter though it looks easy