College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.4: 31

Answer

$x^2-9$

Work Step by Step

$$(x+3)(x-3)$$ $$(x\times x)+(x\times (-3))+(3\times x)+(3\times (-3))$$ $$x^2-3x+3x-9$$ $$x^2-9$$
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