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 09-15-2011 #2 Mr. Hui     Join Date: Mar 2005 Posts: 10,609 Corrected. Thank you jcsites and MAS1. ${12^2}\div4*b+4$ Substitute the value of 9 for b: ${12^2}\div4*9+4$ Evaluate exponents: $144\div4*9+4$ Divide: $36*9+4$ Multiply: $324+4$ Add: $328$ __________________ Do Math and you can do Anything! Last edited by Mr. Hui; 09-24-2011 at 09:46 PM..