Q. The radical axis of the circles $x^{2}+y^{2}+4 x=1$ and $4 x^{2}+4 y^{2}=9$ is

KCETKCET 2022 Report Error

A

$16 x+5=0$

B

$x-2=0$

C

$16 x=5$

D

$x+2=0$

Solution:

$16 x=4-9$
$ \Rightarrow 16 x=5$

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