Find the sum and product of the roots of the quadratic equation $2x^2 - 9x + 4 = 0$.

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Step 1: Here $a = 2$, $b = -9$, $c = 4$. Let $\alpha$, $\beta$ be the roots of $2x^2 - 9x + 4 = 0$.
Step 2: Sum $= \alpha + \beta = \frac{-b}{a} = \frac{9}{2}$
Step 3: Product $= \alpha \beta = \frac{c}{a} = \frac{4}{2} = 2$

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