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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 1 · Set 1 · Q1
If α and β are the zeroes of polynomial 3 x^2+6 x + k such that α+β+α β=-2/3, then the value of k is:
If $\displaystyle \alpha$ and $\displaystyle \beta$ are the zeroes of polynomial $\displaystyle 3 \mathrm{x}^{2}+6 \mathrm{x}+\mathrm{k}$ such that $\displaystyle \alpha+\beta+\alpha \beta=-\frac{2}{3}$, then the value of k is :
Official answer
(D)
$\displaystyle 4$
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CBSE Class 10 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.