## Prealgebra (7th Edition)

16x$^8$
(2x$^2$)$^4$ can be re-written as 2$^4$(x$^2$)$^4$. 2$^4$ = 16 This expression can therefore be re-written as 16(x$^2$)$^4$. As (x$^2$)$^4$ equals x$^8$, the entire expression can be written as: 16x$^8$.