Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 4 - Section 4.4 - Multiplying Polynomials - 4.4 Exercises - Page 305: 67



Work Step by Step

Using $(a+b)^2=a^2+2ab+b^2$ or the square of a binomial, the given expression, $ (0.2x-1.4y)^2 ,$ is equivalent to \begin{array}{l}\require{cancel} (0.2x)^2+2(0.2x)(-1.4y)+(-1.4y)^2 \\\\= 0.04x^2-0.56y+1.96y^2 .\end{array}
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