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If the lines x^(2)-y^(2)-2x+2y=0 and x+2...

If the lines `x^(2)-y^(2)-2x+2y=0 and x+2y+k=0` are concurrent, then k=

A

`-1`

B

`-3`

C

`1`

D

`3`

Text Solution

Verified by Experts

The correct Answer is:
B
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