Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 6 - Factoring, Solving Equations, and Problem Solving - 6.2 - Factoring the Difference of Two Squares - Problem Set 6.2 - Page 249: 97



Work Step by Step

Using $a^3+b^3=(a+b)(a^2-ab+b^2)$, or the factoring of the sum of $2$ cubes, the factored form of the given expression, $ 125x^3+8y^3 ,$ is \begin{array}{l}\require{cancel} (5x+2y)[(5x)^2-5x(2y)+(2y)^2] \\\\= (5x+2y)(25x^2-10xy+4y^2) .\end{array}
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