The discriminant of quadratic equation is $2 x^{2} + 3 x - 5 = 0$ is ___

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Solution

$2 x^{2} + 3 x - 5 = 0$

Comaping this with the standard form $a x^{2} + b x + c = 0$ , we get a = 2, b = 3, c = -5

Discriminant, D = $b^{2} - 4 a c$

D = $3^{2} - 4 \times 2 \times (- 5)$

= $9 + 40$ = 49

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