## Algebra and Trigonometry 10th Edition

Published by Cengage Learning

# Chapter 1 - 1.4 - Quadratic Equations and Applications - 1.4 Exercises - Page 111: 74

-5/3

#### Work Step by Step

Using the quadratic formula, we obtain: $$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$$ $$x=\frac{30\pm \sqrt{(30)^2-4(9)(25)}}{2(9)}$$ $$x=-5/3$$

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