Answer
$x^2-xy-2y^2$
Work Step by Step
$(x-2y)(x+y)$
Use the FOIL method:
$x^2+xy-2xy-2y^2$
Combine like terms and the answer is:
$x^2-xy-2y^2$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.4 - Polynomials - R.4 Assess Your Understanding - Page 48: 63
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