Answer
Sample answer: $9x^{4}+9x^{3}+9x^{2}$
Work Step by Step
First, we write a trinomial with $1$ as the GCF of its terms,
to ensure that here will be no other common factors.
(sample:)$\qquad x^{2}+x+1$.
Then we multiply it with $9x^{2}$:
$9x^{2}(x^{2}+x+1.)=\qquad$ ... distribute
$=9x^{2}(x^{2})+9x^{2}(x)+9x^{2}(1)\qquad$... simplify
=$9x^{4}+9x^{3}+9x^{2}$
Sample answer: $9x^{4}+9x^{3}+9x^{2}$
