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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: easy ques just help me !!
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[Post New]17 Apr 2008 10:41:33 IST
    Subject: easy ques just help me !!
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aggmegha90 (63)

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find the square root of
 
12 -  ( 68 + 48  2)
 
please help! i will rate ur ans
    
[Post New]17 Apr 2008 10:53:51 IST
    Subject: easy ques just help me !!
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sameerh522 (24)

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take under root 2 as 3/2
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[Post New]17 Apr 2008 10:56:34 IST
    Subject: easy ques just help me !!
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aggmegha90 (63)

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why??
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[Post New]17 Apr 2008 11:03:57 IST
    Subject: Re:easy ques just help me !!
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uday_zingtudor (931)

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68 + 48rt2 = 36 + 32 +48rt2

                 = 62 + (4rt2)2 + 2(6)(4rt2)

                 = (6 + 4rt2)2

sqrt of this is 6 + 4rt2

Now the given expression becomes 6 - 4rt2

write it as 22 + (rt2)2 - 2(2)(rt2)

sqrt of this is 2 - rt2

~Cheerio!!!
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don't get scared !!!
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[Post New]17 Apr 2008 11:07:34 IST
    Subject: easy ques just help me !!
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aggmegha90 (63)

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thanks uday can u try my other ques also?(i posted it earlier)
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