Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-4 Multiplying Special Cases - Practice and Problem-Solving Exercises: 44

Answer

$16x^{2}-49y^{2}$

Work Step by Step

We use the formula for the difference of squares to apply to this question. The difference of squares formula is: $(a-b) (a+b) = a^{2} - b^{2}$ In the given formula let 4x represents a and 7y represents b. $(4x-7y) (4x+7y) = (4x)^{2} - (7y)^{2}$ = $16x^{2}-49y^{2}$
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