Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 6 - Section 6.2 - Factoring Trinomials of the Form x2+bx+c - Exercise Set - Page 428: 35



Work Step by Step

$x^{2}$ +xy-2$y^{2}$=$x^{2}$ +2xy-xy -2$y^{2}$ becouse xy=2xy-xy ($x^{2}$ +2xy)+(-xy -2$y^{2}$ )= x(x+2y)-y(x+2y)=(x-y)(x+2y)
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