Jawabanmu

2014-09-04T19:05:09+07:00
 5^{ \frac{2x+1}{2} }  (5^{2} ) ^{x-2}
 5^{ \frac{2x+1}{2} }  5^{2x-4}
 \frac{2x+1}{2} = 2x-4   x2
= 2x+1 = 4x-8
= 2x - 4x = -8-1
= - 2x = -9
= x =  \frac{-9}{-2}
= x = 4  \frac{1}{2}