Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.5 - Equations - 1.5 Exercises: 66

Answer

$x_1 = 1, x_2 = -6$

Work Step by Step

$Find$ $all$ $real$ $solutions$ $of$ $the$ $quadratic$ $equation:$ $x^2+5x-6$ Use the Quadratic Equation Formula: $x = \frac{-b \pm \sqrt {b^2-4ac}}{2a}$ $1x^2+5x-6$ $a = 1, b = 5, c = -6$ $x = \frac{-(5) \pm \sqrt {(5)^2- 4(1 \times -6)}}{2(1)}$ $x = \frac{-5 \pm \sqrt {25 + 24}}{2}$ $x = \frac{-5 \pm \sqrt {49}}{2}$ $x_1 = \frac{-5 + 7}{2}, x_2 = \frac{-5-7}{2}$ $x_1 = \frac{2}{2}, x_2 = \frac{-12}{2}$ $x_1 = 1, x_2 = -6$
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.