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If x = 1 is a solution of the equation x2 + kx + 3 = 0 then k = …………

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If x = 1 is a solution of the equation x2 + kx + 3 = 0 then k = …………
(A) 2
(B) -2
(C) 4
(D) -4

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Answer: (D) -4

The given equation is x2 + kx + 3 = 0

Here,

x = 1

x2 + kx + 3 = 0

(1)2 + k x 1 + 3 = 0

1 + k + 3 = 0

4 + k = 0

k = -4

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