Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 3 - Polynomial and Rational Functions - 3.3 Zeros of Polynomial Functions - 3.3 Exercises - Page 335: 3

Answer

$\color{blue}{\bf\text{false}}$ $\color{blue}{\bf(-2)\text{, not }2 \text{, is a zero with multiplicity }4}$

Work Step by Step

We are given the function $f(x)=(x+2)^4(x-3)$ and asked if "$\text{2 is a zero with multiplicity 4}$" is true or false We see that $(x+2)^4$ is raised to the power of $4$ and so it will have the same zero $4$ times. However, the zero of $(x+2)$ is: $x+2=0$ $x=-2$ So the statement is $\color{blue}{\bf\text{false}}$ because it is actually $(-2)$, not $2$ that is a zero with multiplicity 4
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