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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 1 · Q19
Statement A (Assertion) : If $\displaystyle 5+\sqrt{7}$ is a root of a quadratic equation with rational co-efficients, then its other root is $\displaystyle 5-\sqrt{7}$. Statement R (Reason) : Surd roots of a quadratic equation with rational co-efficients occur in conjugate pairs.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true; and Reason (R) is the correct explanation of Assertion (A).
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CBSE Class 10 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.