+304 \({-b \pm \sqrt{b^2-4ac} \over 2a} \to \frac{-8\pm \sqrt{8^2-4\cdot \:4\left(-60\right)}}{2\cdot \:4} \to\frac{-8\pm\sqrt{8^2+4\cdot \:4\cdot \:60}}{2\cdot \:4} \to\frac{-8\pm\sqrt{1024}}{2\cdot \:4}\to\frac{-8\pm\sqrt{1024}}{8}\to \frac{-8\pm32}{8}\to\frac{-40}{8}, \frac{24}{8}. \)Thus, the roots are \(\boxed{-5}, \boxed{3}.\) 
+304 \({-b \pm \sqrt{b^2-4ac} \over 2a} \to \frac{-8\pm \sqrt{8^2-4\cdot \:4\left(-60\right)}}{2\cdot \:4} \to\frac{-8\pm\sqrt{8^2+4\cdot \:4\cdot \:60}}{2\cdot \:4} \to\frac{-8\pm\sqrt{1024}}{2\cdot \:4}\to\frac{-8\pm\sqrt{1024}}{8}\to \frac{-8\pm32}{8}\to\frac{-40}{8}, \frac{24}{8}. \)Thus, the roots are \(\boxed{-5}, \boxed{3}.\)
