Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 8 - Review Exercises - Page 657: 17

Answer

$2$ imaginary conjugate solutions

Work Step by Step

The equation is in the standard form. To determine the number and the type of the solutions for the equation $ax^2+bx+c=0$, we have to calculate the discriminant $\Delta=b^2-4ac$ and compare it to zero. Identify $a$, $b$, $c$: $$\begin{align*} a&=1\\ b&=-4\\ c&=13. \end{align*}$$ Calculate the discriminant: $$\begin{align*} \Delta=(-4)^2-4(1)(13)=-36. \end{align*}$$ Because $\Delta<0$, the equation has $2$ imaginary conjugate solutions.
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