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 - Section 8.2 - The Quadratic Formula - Exercise Set - Page 607: 6


{$\dfrac{-5 - \sqrt{65}}{2},\dfrac{-5 + \sqrt{65}}{2}$}

Work Step by Step

Quadratic formula suggests that $x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$ Given: $x^2+5x-10=0$ Thus, $x=\dfrac{-(5) \pm \sqrt{(5)^2-4(1)(-10)}}{2(1)}$ or, $x=\dfrac{-5 \pm \sqrt{65}}{2}$ or, $x=\dfrac{-5 - \sqrt{65}}{2},\dfrac{-5 + \sqrt{65}}{2}$ Our solution set is: {$\dfrac{-5 - \sqrt{65}}{2},\dfrac{-5 + \sqrt{65}}{2}$}
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.