Algebra 1

by Hall, Prentice

Published by Prentice Hall

ISBN 10: 0133500403

ISBN 13: 978-0-13350-040-0

Chapter 11 - Rational Expressions and Functions - 11-4 Adding and Subtracting Rational Expressions - Practice and Problem-Solving Exercises - Page 675: 23

Answer

$(m+n)(m-n)$

Work Step by Step

To find the LCD, or the Least Common Multiple,we must write out each denominator as products of prime factors. $m+n = (m+n)$ $m-n = (m-n)$ Since there are no common factors between the denominators, the LCD, or LCM, then is $(m+n)(m-n)$

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