Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Practice and Problem-Solving Exercises - Page 768: 77

$x $= $- \frac{5}{3}, - 1$

Given information: a= 3 b=8 c= 5 By using the Quadratic Formula: $x$= $\frac{- b +\sqrt b^{2} - 4ac}{2a}$ = $\frac{-8 +\sqrt 8^{2}- 4(3)(5)}{2(3)}$ $x$= $\frac{- 8 +\sqrt 4}{6}$= $\frac{-8 + 2}{6}$ $x$=$-\frac{5}{3} , -1$