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Find the value(s) of 'k' so that the quadratic equation $4x^2 + kx + 1 = 0$ has real and equal roots.
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Sol. For real and equal roots, $D = 0$
$k^2 - 16 = 0$
$k = \pm 4$
$k^2 - 16 = 0$
$k = \pm 4$
Find the value(s) of 'k' so that the quadratic equation 4x2 + kx + 1 = 0 has real and equal roots.
CBSE Class 10 Maths PYQ · Quadratic Equations · Nature of Roots · 2 Marks · March 2025 · Standard
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