Precalculus (6th Edition)

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

Chapter 1 - Equations and Inequalities - Chapter 1 Test Prep - Review Exercises - Page 178: 47

Answer

(D)

Work Step by Step

Step 1. Equation-A does not have two real, distinct solutions because a square can not be negative. Step 2. Equation-B does not have two real, distinct solutions because the left side is a perfect square it has only one solution. Step 3. Equation-C does not have two real, distinct solutions because the left side is a perfect square and it has only one solution. Step 4. Equation-D has two real, distinct solutions because taking the square root on both sides will result $\pm\sqrt {11}$ on the right side.
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