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If the straight line 3x + 4y = k touches...

If the straight line 3x + 4y = k touches the circle `x^2+y^2-10x` = 0, then the value of k is:

A

2 or 20

B

`-2` or 20

C

`-1` or 20

D

`-10` or 40

Text Solution

Verified by Experts

The correct Answer is:
D
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