Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Prerequisites - P.3 - Polynomials and Special Products - Exercises - Page 33: 92


$(3+4)^2=49\ne25=3^3+4^2$ $(x+y)^2=x^2+y^2$ if $x=0$ or $y=0$

Work Step by Step

$(3+4)^2=7^2=49$ $3^3+4^2=9+16=25$ $(x+y)^2=x^2+y^2$ $x^2+2xy+y^2=x^2+y^2$ $2xy=0$ $xy=0$ $x=0$ or $y=0$
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