Answer
$b^2-1$
Work Step by Step
Remember that the product of the sum and difference of the same two terms is the difference of their squares.
$(b+1)(b-1)=b^2-1$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Special Cases - Practice and Problem-Solving Exercises - Page 496: 26
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