Quadratic Equations

MCQ - 419-9151

Question:

If the roots of the equation ax² + bx + c = 0 are equal then c = ?

$\frac{-b2}{4a}$
$\frac{-b}{2a}$
$\frac{-b2}{4a}$
$\frac{-b}{2a}$

Correct Answer: C

Explanation:

If roots of the equation ax² + bx + c = 0 are equal
Then D = b² - 4ac = 0
b² = 4ac
c = $\frac{b2}{4a}$

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504 MCQ for effective preparation of the test of Quadratic Equations of Mathematics section.

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