*To*: mathgroup@smc.vnet.net*Subject*: [mg12164] Sqrt problem - restated*From*: PAUL REISER <REISER@HRTS.NRL.NAVY.MIL>*Date*: Mon, 27 Apr 1998 01:46:47 -0400

That square root problem was a mis-statement on my part, but thank you to everyone who helped. The problem I am having is something like how do I get "2" out of this: Sqrt[a - b] Sqrt[a + b] 1 + ----------------------- 2 2 Sqrt[a - b ] I'm starting to understand why Mathematica doesn't deal with this because of the multiple value of square root, but if I know everything under the square roots are positive, can I reduce this to 2 somehow without substitution? (substitution would be prohibitively tedious in my case) Thanks for any help Paul Reiser