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 - Page 61: 80



Work Step by Step

$$(7x+3y)(7x-3y)$$ The product of the sum and the difference of two terms can be found using this formula: $(a+b)(a-b) = a^2-b^2$. $$=(7x)^2-(3y)^2$$ $$=49x^2-9y^2$$
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