Hi my fellow westlander , I have a little deathclaw situation,I need help with .I am on my way to visit brotherhood of steel hideout but I'm encountering with a big pack of deathclaw who killing me with just two blow,and there is more then one at the same time I have to deal with.I have Boone and Rex with me but they aren't much help against five deathclaw.What weapon should I use to take those beast down quickly?
The Deathclaws in New Vegas are a completely different kettle of fish (so to speak) compared to the ones in Fallout 3, in that they are a lot tougher and more deadly.
By the sounds of what you've said I think you are trying to walk to the BoS hideout directly from Vegas by heading south straight through the main Deathclaw area, which is a very bad idea especially when low-mid level.
I advise/suggest that you nip back to Springfield or the NCRCF and then head to the BoS Hideout by walking Northwards or at least North Eastish, this way you will avoid the main Deathclaw area and thus won't be used as a brief chew toy every couple of minutes by a peckish Deathclaw or four.