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square root problem

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by Dave320 » Sun Aug 31, 2008 4:52 pm
Here is a problem I'm sure many of you will find basic but has me scratching my head, I have only just started studying for the GMAT and I guess there are a few basic things I'm real rusty on. As part of a solution to a problem in a GMAT review book it gives the following step:

sqrt8/sqrt pie=r

'simplify the sqrt8'

2*sqrt2/sqrt pie=r

what steps do you take to simplify sqrt8 into 2*sqrt2 ?

Thanks!
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Re: square root problem

by Sunny22uk » Sun Aug 31, 2008 5:33 pm
Dave320 wrote:Here is a problem I'm sure many of you will find basic but has me scratching my head, I have only just started studying for the GMAT and I guess there are a few basic things I'm real rusty on. As part of a solution to a problem in a GMAT review book it gives the following step:

sqrt8/sqrt pie=r

'simplify the sqrt8'

2*sqrt2/sqrt pie=r

what steps do you take to simplify sqrt8 into 2*sqrt2 ?

Thanks!
>>sqrt of 8 can be written as square root of 4 x2
>>Since square root of 4 is 2, you can take 2 out of the square root
>>the answer is 2*sqrt2, let me know if you have any questions
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