Answer
$-p^{4}q^{4} + 14p^{}q^{6} -11p^{4}q^{}$
Work Step by Step
Given the polynomial:
$-p^{4}q^{4} + 14p^{}q^{6} -11p^{4}q^{}$
We split the middle + 14p^{}q^{6} into 9p^{}q^{6} and 5p^{}q^{6}
$-p^{4}q^{4} + 9p^{}q^{6} + 5p^{}q^{6} -11p^{4}q^{}$
We combine like terms and simplify it to
$-p^{4}q^{4} + 14p^{}q^{6} -11p^{4}q^{}$