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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 3 · Set 1 · Q4
If α and β are the zeroes of the polynomial p(x)=x^2- a x- b, then the value of (α+β+α β) is equal to:
If $\displaystyle \alpha$ and $\displaystyle \beta$ are the zeroes of the polynomial $\displaystyle p(x)=x^{2}-\mathrm{a} x-\mathrm{b}$, then the value of $\displaystyle (\alpha+\beta+\alpha \beta)$ is equal to:
Official answer
(C)
$\displaystyle \mathrm{a}-\mathrm{b}$
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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.