Answer
$9x^{14}$
Work Step by Step
RECALL:
(i) The products-to-powers rule states that: $(ab)^n=a^nb^n$
(ii) The power rule states that $(a^m)^n=a^{mn}$
Use the products-to-powers rule to find:
$=(-3)^2(x^7)^2
\\=9(x^7)^2$
Use the power rule to find:
$=9x^{7(2)}
\\=9x^{14}$
