Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.7 Polynomials in Several Variables - 4.7 Exercise Set - Page 283: 12



Work Step by Step

Substitute the given values of the variables to obtain: $x^2+5y^2-4xy \\=5^2+5(-2)^2-4(5)(-2) \\=25+5(4)-(-40) \\=25+20+40 \\=85$
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