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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 1 · Q16
If α and β are the zeroes of the quadratic polynomial p ( x )= x^2- ax - b, then the value of α^2+β^2 is:
If $\displaystyle \alpha$ and $\displaystyle \beta$ are the zeroes of the quadratic polynomial $\displaystyle \mathrm{p}(\mathrm{x})=\mathrm{x}^{2}-\mathrm{ax}-\mathrm{b}$, then the value of $\displaystyle \alpha^{2}+\beta^{2}$ is :
Official answer
(B)
$\displaystyle \mathrm{a}^{2}+2 \mathrm{~b}$
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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.