# Chapter 8 - Polynomials and Factoring - 8-5 Factoring X(squared) + bx + c - Lesson Check - Page 503: 2

$(r-6)(r-7)$

#### Work Step by Step

List the pairs of numbers whose product is 42. 1,42 2,21 3,14 6,7 Determine which pair sums to 13, Since -13 is the coefficient of r and 42 is positive, both expressions of the binomial will be subtraction. $6+7=13$ $r^2-13r+42=(r-6)(r-7)$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.