Answer
$4x^2+12xy+9y^2$
Work Step by Step
RECALL:
$(a+b)^2=a^2+2ab+b^2$
Use the formula with $a=2x$ and $b=3y$ to obtain:
$(2x+3y)^2
\\= (2x)^2 + 2(2x)(3y) + (3y)^2
\\=4x^2+12xy+9y^2$
College Algebra (10th Edition)
by Sullivan, Michael
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
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