Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 6 - Section 6.4 - Factoring Special Forms - Exercise Set - Page 454: 62

Answer

$(x-9y)^2$

Work Step by Step

$ x^{2}-18xy+81y^2\qquad$...recognize a perfect square trinomial. $(A\pm B)^{2}=A^{2}\pm 2AB+B^{2}$; $A=x,\ B=9y$ $=(x-9y)^2$
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