Question 953060

recall the rule:
For all numbers {{{x}}} and all integers {{{m}}} and {{{n}}} ,
{{{x^m* x^n=x^(m+n)}}}. 
The exponents are added for the bases that are the SAME.

so, you have:

{{{14^7* 14^9=14^(7+9)=14^16}}}