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

Chapter 2 - Linear and Quadratic Functions - Section 2.7 Complex Zeros of a Quadratic Function* - 2.7 Assess Your Understanding - Page 178: 26

Answer

The equation has two unequal real solutions.

Work Step by Step

The equation has $a=2, b=-4, \text{ and } c=1$. To determine the character of the solutions of this equation, we need to find the value of its discriminant which is $b^2 - 4ac$. Substitute the values into this expression: $b^2 - 4ac = (-4)^2 - 4(2)(1)$ $b^2 - 4ac = 16 - 4(2)(1)$ $b^2 - 4ac = 16 - 8$ $b^2 - 4ac = 8$ Since $8 > 0$, the equation has two unequal real solutions.
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