# Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Practice and Problem-Solving Exercises - Page 479: 51

$14pq^{6} - p^{4}q^{4} - 11p^{4}q$

#### Work Step by Step

We simplify the parenthesis $9pq^{6} - 11p^{4}q^{} + 5p^{}q^{6} - p^{4}q^{4}$ Rewrite the terms so that terms with the same variables and powers are written together $9pq^{6} + 5p^{}q^{6} - p^{4}q^{4} - 11p^{4}q$ $14pq^{6} - p^{4}q^{4} - 11p^{4}q$

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