The value (s) of $k$ for which the quadratic equation $k x^{2} - k x + 1 = 0$ has equal roots

k = 0

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k = 4

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k = 0, 4

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k = - 4

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Solution

The correct option is B $k = 4$
$T h e e q u a t i o n h a s e q u a l r o o t s i f, D = b^{2} - 4 a c = 0, F o r e q u a t i o n k x^{2} - 5 x + 1 = 0, D = (- 5)^{2} - 4 (k) (1) = 0 D = 25 - 4 k = 0, k = \frac{25}{4}$

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Similar questions

5 x^{2} + k x + 4 = 0

2 x^{2} + k x + 4 = 0

k

\geq 4 \sqrt{2}

k \leq - 4 \sqrt{2}

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