Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Section 5.4 - Factoring Trinomials - Exercise Set - Page 361: 47



Work Step by Step

$5x^{2}+56x+11=$ ... ... Searching for two factors of $ac=+55$ whose sum is $b=+56,$ we find$\qquad+55$ and $+1.$ Rewrite the middle term and factor in pairs: $=5x^{2}+55x+x+11=$ $=5x(x+11)+(x+11)$ = $(x+11)(5x+1)$
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