Answer
$\frac{1}{9}$.
Work Step by Step
The given expression is
$=3^{-6}\cdot 3^4$
Use the law of exponents $a^{b}\cdot a^c=a^{b+c}$
We have $a=3,b=-6$ and $c=4$
$=3^{-6+4}$
Simplify.
$=3^{-2}$
Use the law of exponents $a^{-b}=\frac{1}{a^b}$
We have $a=3$ and $b=2$
$=\frac{1}{3^{2}}$
Use $3^2=9$.
$=\frac{1}{9}$.
