The equation to the pair of straight lin...

The equation to the pair of straight lines passing through `(2, 1)` and
perpendicular to the pair of lines `4xy+2x+6y+3=0` is

A

(a) `xy+x+2y-6=0`

B

(b) `xy-x+2y-2=0`

C

(c) `xy+x-2y-2=0`

D

(d) `xy-x-2y+2=0`

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The correct Answer is:

D

NA

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