Answer
not true if a= -3 and b= -2
Work Step by Step
$a\lt $b
a = -3
b = -2
a^2= 9
b^2 = 4
$9 \gt $4
hence proved
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Appendix A - A.3 - Inequalities - Exercises - Page 551: 31
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