Answer
$9x^{2}-6xy+y^{2}$
Work Step by Step
Using the square of the binomial $(a-b)^{2}=a^{2}-2ab+b^{2}$,
$(3x-y)^{2}=(3x)^{2}-2(3x)(y)+y^{2}=9x^{2}-6xy+y^{2}$.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Appendix A - Exercise Set - Page 976: 41
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