College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.5 - Polynomials - R.4 Assess Your Understanding - Page 49: 86



Work Step by Step

RECALL: $(a+b)^2=a^2+2ab+b^2$ Use the formula with $a=2x$ and $b=3y$ to obtain: $(2x+3y)^2 \\= (2x)^2 + 2(2x)(3y) + (3y)^2 \\=4x^2+12xy+9y^2$
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