If x2-2 k x-4-0 has a root x-2- then the value of k is-

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Discriminant

If x2+2 k x+4...

Question

If x² + 2 kx + 4 = 0 has a root x = 2, then the value of k is?

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

x^{2} - 2 k x - 6 = 0

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