The discriminant of the quadratic equation $ax^2+bx+c=0$ is

Question

Accepted Answer

D. $b^2 - 4ac$

1. The discriminant is the quantity under the root in the quadratic formula.
2. It equals $D = b^2 - 4ac$.
3. Its sign decides the nature of the roots.
_Source: Karnataka SSLC (KSEEB) Class 10 Mathematics, Ch10 'Quadratic Equations', §10.4_

Answer

$b^2 + 4ac$

Answer

$4ac - b^2$

Answer

$\sqrt{b^2-4ac}$

The discriminant of the quadratic equation $ax^2+bx+c=0$ is

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