College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Chapter P Review - Concept Check - Page 75: 13

Answer

See explanation

Work Step by Step

i) $a^2-b^2=(a+b)(a-b)$ ii) $a^2+2ab+b^2=(a+b)^2$ iii)$ a^3+b^3=(a+b)(a^2-ab+b^2)$ Using the first formula, $x^2-3^2=(x+3)(x-3)$
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