Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 4 - Quadratic Functions and Equations - 4-7 The Quadratic Formula - Practice and Problem-Solving Exercises - Page 245: 25

Answer

\begin{align*} \text{Discriminant: }& -4 \\\text{Number of Real Solutions: }& 0 \end{align*}

Work Step by Step

In the given equation, \begin{align*} x^2+4x+5=0 ,\end{align*} $a= 1 ,$ $b= 4 ,$ and $c= 5 .$ Using the Discriminant Formula which is given by $b^2-4ac,$ the value of the discriminant is \begin{array}{l}\require{cancel} & 4^2-4(1)(5) \\&= 16-20 \\&= -4 \end{array} Since the discriminant is less than $0,$ then there are no real solutions. Hence, \begin{align*} \text{Discriminant: }& -4 \\\text{# of Real Solutions: }& 0 \end{align*}
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.