Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Section 5.5 - Factoring Special Forms - Concept and Vocabulary Check: 8

Answer

$-\text{ }\text{ }7$

Work Step by Step

The given expression can be written as: $=x^2-2(x)(7)+7^2$ RECALL: The perfect square trinomial $a^2-2ab+b^2$ can be factored as $(a-b)^2$. Factor the trinomial using the formula above with $a=x$ and $b=7$ to obtain: $=(x-7)^2$ Thus, the missing expression in the given statement is: $-\text{ }\text{ }7$
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