College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Appendix I - B Algebra and Common Algebraic Relationships - Solving Simultaneous Equations - Appendix I-B Exercises on Algebra - Page A-3: 1

Answer

$y^{2}+4x^{2}-4xy$

Work Step by Step

$(y-2x)^{2}=y^{2}+(2x)^{2}-2.y.2x=y^{2}+4x^{2}-4xy$
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