Answer
$45x^{4}y^{}z^{6}$
Work Step by Step
RECALL:
The product rule of exponents states that: $a^m \cdot a^n=a^{m+n}$.
Multiply the numerical coefficients, and use the rule above to find:
$\\=45x^{3+1}y^{1+0}z^{4+2}
\\=45x^{4}y^{1}z^{6}
\\=45x^{4}y^{}z^{6}$
