College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 1 - Equations and Inequalities - Exercise Set 1.5 - Page 164: 163


If a quadratic equation has imaginary solutions, this means that its graph doesn't "touch" of "pass" the x-axis

Work Step by Step

For example, the equation $x^2+1=0 \longrightarrow x^2=-1\longrightarrow x=\sqrt{-1}$ has no real solutions and we can see that the graph doesn't touch de x-axis
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