Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Appendix A - Equations and Inequalities - Page 420: 42



Work Step by Step

$36x^{2}+60x+25=0$ $36x^{2}+30x+30x+25=0$ $6x(6x+5)+5(6x+5)=0$ $(6x+5)(6x+5)=0$ $(6x+5)=0$ or $(6x+5)=0$ $x=-\frac{5}{6}$ or $x=-\frac{5}{6}$ Check: Substituting $x=-\frac{5}{6}$ in the equation, $36(-\frac{5}{6})^{2}+60(-\frac{5}{6})+25=0$ $\frac{36\times25}{36}-\frac{60\times5}{6}+25=0$ $25-50+25=0$ $0=0$ The value checks and the solution set is {$-\frac{5}{6}$}
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.