Answers

2014-01-10T22:21:38+08:00
 (  4^{-1}  2^{-3} ) / (  5^{0}  4^{-2}
= (  \frac{1}{4} + (  \frac{1}{8} ) / ( 1 -  \frac{1}{16} )
= 2/5
1 4 1