Answer
The difference of squares.
Work Step by Step
The difference of squares formula is:
$(a-b) (a+b) = a^{2} - b^{2}$
Since there are two terms and they are both squares it is the difference of squares rule.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 8 - Polynomials and Factoring - 8-7 Factoring Special Cases - Lesson Check - Page 514: 7
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