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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 1 · Q9
If the quadratic equation a x^2+ b x+ c =0 has two real and equal roots, then 'c' is equal to
If the quadratic equation $\displaystyle \mathrm{a} x^{2}+\mathrm{b} x+\mathrm{c}=0$ has two real and equal roots, then 'c' is equal to
Official answer
(D)
$\displaystyle \frac{\mathrm{b}^{2}}{4 \mathrm{a}}$
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CBSE Class 10 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.