Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.3 - Algebraic Expressions - 1.3 Exercises: 32

Answer

$49^2-28y + 4$

Work Step by Step

$Multiply$ $the$ $algebraic$ $expressions$ $using$ $a$ $Special$ $Product$ $Formula$ $and$ $simplify:$ $(2-7y)^2$ Use the Square of a Difference Product Formula: $(A-B)^2 = A^2-2AB+B^2$ $(2-7y)^2$ = $2^2-(2\times2\times7y) + 7y^2$ $=4 - 28y + 49^2$ $=49^2-28y + 4$
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