Answers

2014-06-23T14:31:45+08:00
Solution:     

Raise both sides of the equation to the power of:

(4 + {4th root of a/2})^4 = 7^4
4^4 + a/2 = 7^4
25+ + a/2 = 2401
         a/2 = 2401 - 256 
         a/2 = 2145
           a  =  2(2145)
            a = 4290............ANSWER
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