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Two circles x^(2) + y^(2) -2kx = 0 and x...

Two circles `x^(2) + y^(2) -2kx = 0` and `x^(2) + y^(2) - 4x + 8y + 16 = 0` touch each other externally.Then k is

A

4

B

1

C

2

D

-4

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHMATICS 2013-MCQs
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