Answer
cannot be factored because it is not a difference of two squares
Work Step by Step
The given expression, $
81y^2+49
,$ does not have a common factor and is neither a difference of $2$ squares. Hence, it cannot be factored.
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 4 - Quadratic Functions and Equations - 4-4 Factoring Quadratic Expressions - Practice and Problem-Solving Exercises - Page 221: 55
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