For what value of - the quadratic equation - has equal roots-

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Nature of Roots of a Quadratic Equation

For what valu...

Question

For what value of 𝒌, the quadratic equation $x^{2} - k x + 4 = 0$ has equal roots?

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x^{2} + k (2 x + k - 1) + 2 = 0

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

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x^{2} - k x + 9 = 0

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