Which of the following expressions represents the discriminant of the quadratic equation ?

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

Which of the following expressions represents the discriminant of the quadratic equation ax2+bx+c=0ax^{2}+bx+c=0? (a) b2+4acb^2 + 4ac (b) b2−4acb^2 - 4ac (c) b2−4ac\sqrt{b^2 - 4ac} (d) b2−2acb^2 - 2ac

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