✓ Board-verified↻ asked 3×
Mathematics · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q8
The least positive value of k , for which the quadratic equation $\displaystyle 2 x^{2}+\mathrm{k} x-4=0$ has rational roots, is
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 2$
More from Quadratic Equations
- A garden designer is planning a rectangular lawn that is to be surrounded by a uniform walkway. The total…2025 · asked 3×
- In the picture given below, one can see a rectangular in-ground swimming pool installed by a family in their…2022 · asked 3×
- In the given figure, a circle is centred at (1, 2). The diameter of the circle is2026 · asked 3×
- A rectangular floor area can be completely tiled with 200 square tiles. If the side length of each tile is…2024 · asked 3×
- Statement A (Assertion): If 5+√7 is a root of a quadratic equation with rational co-efficients, then its…2023 · asked 3×
- The value of ' a ' for which a x^2+x+a=0 has equal and positive roots is:2025 · asked 3×
- The roots of the equation x^2+3 x-10=0 are:2023 · asked 3×
- Find the value of m for which the quadratic equation (m-1) x^2+2(m-1) x+1=0 has two real and equal roots. OR…2022 · asked 3×
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.