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If one root of the equation is reciproca...

If one root of the equation is reciprocal to the other root, which of the following is correct?

A

A)`ax^2+bx+a=0`

B

B)`ax^2+bx+k^2=0`

C

C)`ax^2+bx=0`

D

D)`x^2+x-c=0`

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