Solve<br> <br> $\qquad \qquad \qquad 2x^2+7x-9=0$

Question

$\begin{array}{1 1} (a)\;\frac{-9}{2}, \normalsize 1 \\ (b)\;\frac{1}{2}, \normalsize 9 \\ (c)\;\frac{9}{2},\normalsize -1 \\(d)\;\frac{-1}{2},\normalsize 9 \end{array}$