Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A31: 69

Answer

$x^2+8x+16$

Work Step by Step

We square (expand) the binomial to obtain: $$ (x + 4)^2=(x+4)(x+4)= x^2+2\cdot 4\cdot x+4^2=x^2+8x+16 .$$
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