



 
Hi, Suppose the number was $\large \frac{1}{8}$ then since $8 = 2 \times 2 \times 2 = 2^3$ you can write \[ \frac{1}{8} = \frac{1}{2^3} = 1 \times 2^{3} = \left( 2 \right)^3.\] Penny 



Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 