April 23rd, 2008, 08:57 AM  #1 
Member Joined: Aug 2007 Posts: 39 Thanks: 0  quick question
2* = 4√8 what is the value of x? [The * is x] 
April 23rd, 2008, 10:22 AM  #2 
Senior Member Joined: Oct 2007 From: Chicago Posts: 1,701 Thanks: 3 
2x= 4√8 divide both sides by 2: 2x/2=4(√/2 x=2√8 If you want a rational approximation, it's: x=2√(4*2) =4√2 ~5.65... 
April 24th, 2008, 03:02 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 21,110 Thanks: 2326 
I suspect Kiranpreet meant * x 2 * =* 4√8, which is 2^(2 + 3/2). Hence x = 3 1/2. 

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