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 - Lesson Check - Page 244: 7

Answer

Discriminant: 0 $1$ real solution

Work Step by Step

In the given equation, \begin{align*} x^2-6x+9=0 ,\end{align*} $a= 1 ,$ $b= -6 ,$ and $c= 9 .$ Using the Discriminant Formula which is given by $b^2-4ac,$ the value of the discriminant is \begin{align*} & (-6)^2-4(1)(9) \\&= 36-36 \\&= 0 .\end{align*} Since the discriminant is exactly $0$, then there is 1 solution.
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