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Given that the circle x^(2)+y^(2)+2 x-4...

Given that the circle `x^(2)+y^(2)+2 x-4 y+4=0` and `x^(2)+y^(2)-2 x-4 y-4=0` touch each other the equation of the common tangtnt is

A

`x-2=0`

B

`x+2=0`

C

`y=0`

D

`y+1=0`

Text Solution

Verified by Experts

The correct Answer is:
B
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