simplify
3a^-3 * 4a^5
If you are telling that 3a^-3 * 4a^5 is something like
...................$\displaystyle 3a^{-3}*4a^{5}$,
then it's simple. Just multiply the whole numbers together, and the bases together (folow the law - when equal bases are multiplied, the indices are added. Simple. c:
...................$\displaystyle \left (3*4\left \right )( a^{-3}*a^{5} \right )$