Question 78647
You multiply exponents when you raise a variable or a constant to some power.
Here's an example:
{{{(x^2)^3 = x^(2*3)}}}={{{x^6}}}
{{{(3^2)^3 = 3^(2*3)}}}={{{3^6 = 729}}}

Whenever you multiply variables, then you woul add the exponents only if the variables (also called the base) are the same.
Examples:
{{{(x^2)(x^3) = x^(2+3)}}} = {{{x^5}}}
{{{(4^3)(4^4) = 4^(3+4)}}} = {{{4^7 = 16384}}}