Question

e^-7e^3e^-9

Answer 1

\[e ^{-7}e ^{3}e ^{-9}\] I know that I have to add all ofthe exponents but what do I do after that??

Answer 2

\[e^{-7} \times e^{3} \times e^{-9} = e^{-13}={1 \over e^{13}}\]