## Intermediate Algebra (6th Edition)

Published by Pearson

# Chapter 5 - Review - Page 330: 71

#### Answer

$9x^2-6xy+y^2$

#### Work Step by Step

Using $(a+b)^2=a^2+2ab+b^2$ or the square of a binomial, then, \begin{array}{l} (3x-y)^2 \\= (3x)^2+2(3x)(-y)+(-y)^2 \\= 9x^2-6xy+y^2 .\end{array}

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