Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.5 - Factoring Polynomials - Concept and Vocabulary Check - Page 68: 3



Work Step by Step

The given polynomial can be factored by grouping: $(x^2+7x) + (xy+7y) \\=x(x+7)+y(x+7) \\=(x+7)(x+y).$ Thus, to factor the given polynomial, technique (b) will be used.
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