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If the equations x^2 + 5x + 6 = 0 andx^2...

If the equations `x^2 + 5x + 6 = 0` and`x^2 + kx + 1 = 0` have a common root, then what is the value of k?

A

`-5/2 or -10/3`

B

`5/2 or 10/3`

C

`5/2 or -10/3`

D

`-5/2 or 10/3`

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