College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter R - Section R.2 - Real Numbers and Their Properties - R.2 Exercises: 113

Answer

Both $x$ and $y$ need to be positive OR both $x$ and $y$ need to be negative.

Work Step by Step

Both x and y need to be positive OR both x and y need to be negative for the statement to hold true. x-cubed is positive when x is positive and x-cubed is negative when x is negative. So, only when x cubed and y have the same sign for this statement to become positive.
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