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# How to simplify this indices? watch

1. I kinda stuck on this question.how to simplify it? any help would be greatly appreciated
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2. (Original post by thuvcasio)
I kinda stuck on this question.how to simplify it? any help would be greatly appreciated

http://www.thestudentroom.co.uk/forumdisplay.php?f=38
3. (Original post by thuvcasio)
I kinda stuck on this question.how to simplify it? any help would be greatly appreciated
you can cancel out the 2x in the brackets, leaving you (16/25)^1/2 which equals to sqrt (16/25), then apply your indices rules to give sqrt 16 divided by sqrt 25, to give 4 divided by 5
4. (Original post by thuvcasio)
I kinda stuck on this question.how to simplify it? any help would be greatly appreciated
1/2 power is the same as square rooting the whole thing as it is in brackets. so √2√x√16 / √2√x√25
√16 = 4 √25= 5 and √2√x over √2√x cancel out so the answer is 4/5.

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