PrenticeBoyofDerry Joined 30 Jun 2009 Messages 21,634 Reaction score 2,573 Location Londonderry Country 21 Nov 2011 #16 toasty said: a^2 = a^2 - equation 2 Click to expand... don't get this bit so a^2 = a^2 -(a^2 = a^2 )
