# Chapter 3 - Exponents, Polynomials and Functions - 3.4 Factoring Polynomials - 3.4 Exercises - Page 270: 19

$(r+4)(7r+2)$

#### Work Step by Step

Separate all the terms into two sets of parentheses. Then find the greatest common factor of each set to factor. $7r^2+28r+2r+8$ $=7r(r+4)+2(r+4)$ $=(r+4)(7r+2)$

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