Question

Find the roots of the following quadratic equations
$2x^2+x-4=0$

Answer 1

$2x^2+x-4=0$

$x=\frac{-1\pm \sqrt{1-4\times 2(-4)}}{2\times 2}$

$x=\frac{-1\pm \sqrt{33}}{4}$

$\therefore \alpha =\frac{-1+\sqrt{33}}{4}$

$\beta =\frac{-1-\sqrt{33}}{4}$