y=2x + k is a tangent to the circle x² + y² - 10x = 0. Find the possible values of k?

M

Menko K

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y=2x + k is a tangent to the circle x² + y² - 10x = 0. Find the possible values of k?

Can someone help with this maths question please? Could you explain why you do the steps as you are doing them? It would be extremely helpful.

The line y = 2x + k is a tangent to x² + y² - 10x = 0

k is a constant

Find the possible value(s) of k.

Thanks a lot for the help
 
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