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 179: 64

Answer

$3$ $ -\frac{1}{2}$

Work Step by Step

$2-\frac{5}{x}=\frac{3}{x^2}$ $x\ne0$ $\frac{2x^2-5x}{x^2}=\frac{3}{x^2}$ Find the LCD $ 2x^2-5x=3$ multiply both sides by $x^2$ $ 2x^2-5x-3=0$ subtract 3 from both sides $\Delta=b^2-4ac=5^2+3*2*4=49$ $\frac{-b\pm\sqrt \Delta}{2a}$ $\frac{5+\sqrt {49}}{4}=\frac{12}{4}=3$ $\frac{5-\sqrt {49}}{4}=-\frac{2}{4}=-\frac{1}{2}$
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.