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Simple square root question

Problem Solving — algebra and arithmetic
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Senior | Next Rank: 100 Posts
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by GMAT? » Sat Dec 23, 2006 1:29 pm
I would be grateful for your advice.

Consider the sqaure root of 3. Why is its reciprocal the square root of 3 / 3.

Thanks
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Source: — Quantitative Reasoning |
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by aim-wsc » Sat Dec 23, 2006 8:02 pm
lets use brackets :D ( )
that will be easier

(sq rt of 3) is actually the number which when we multiply by itself gives us the value 3
that means
(sq rt of 3) X (sq rt of 3) = 3

therefore
(sq rt of 3) = 3 / (sq rt of 3)
take reciprocal:

1/ (sq rt of 3) = (sq rt of 3) / 3

i have shown it mathematically.
i hope you dont want theoretical explanation ;)
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by beastly B » Tue Dec 28, 2010 6:04 pm
aim-wsc wrote:lets use brackets :D ( )
that will be easier

(sq rt of 3) is actually the number which when we multiply by itself gives us the value 3
that means
(sq rt of 3) X (sq rt of 3) = 3

therefore
(sq rt of 3) = 3 / (sq rt of 3)
take reciprocal:

1/ (sq rt of 3) = (sq rt of 3) / 3

i have shown it mathematically.
i hope you dont want theoretical explanation ;)
huh cool way
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