Question

Find the roots of f(x)=x^2+3x+1

Answer 1

Use quadratic formula.
\[x=\frac{b \pm \sqrt{b^2-4ac}}{2a}=\frac{3\pm \sqrt{9-4}}{2}\]This gives:\[x=\frac{3\pm \sqrt{5}}{2}\] for your roots.

Answer 2

ooops forgot the negative sign; should be -3 in the numerator