Wikipedia:Reference desk/Archives/Mathematics/2013 May 20

= May 20 =

Rationalisation
If 2^1/2=1.414 then the value 6^1/2-3^1/2, upto three decimal places is? — Preceding unsigned comment added by 14.98.216.131 (talk) 16:08, 20 May 2013 (UTC)
 * My guess is the point of your homework is to understand exponents, rather than to just calculate the answer. If you apply the property of exponents, you actually don't need a calculator to come up with an answer. (Hint: Try to think of ways you can re-write 6^1/2 - especially ways which will allow you to use the information that 2^1/2=1.414 ) -- 71.35.111.68 (talk) 16:23, 20 May 2013 (UTC)
 * Could someone explain to me how you get the value of root 6 minus root 3, knowing only the value of root 2? 86.139.121.71 (talk) 13:56, 21 May 2013 (UTC)
 * Yes, I've been wondering the same thing. 14, are you sure it was a minus sign? 96.46.198.58 (talk) 02:20, 22 May 2013 (UTC)