The equations x^(2)+x+a=0andx^(2)+ax+1=0...

The equations `x^(2)+x+a=0andx^(2)+ax+1=0` have a common root-

A

For no value of a

B

for a single value of a

C

for two values of a

D

for exactly three values of a

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The correct Answer is:

B

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