Solve the quadratic equation 2s² − 3s + 7 = 0.
Using the formula for solving a quadratic equation we find
\begin{aligned}s & =\frac{-(-3) \pm \sqrt{(-3)^2-4(2)(7)}}{2(2)} \\& =\frac{3 \pm \sqrt{-47}}{4} \\& =\frac{3 \pm \sqrt{47} \mathrm{j}}{4} \\& =0.75 \pm 1.71 \mathrm{j}\end{aligned}