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If the values of m for which the line `y=mx+2sqrt(5)` touches the hyperbola `16x^(2)-9y^(2)=144` are the roots of the equation `x^(2)-(a+b)x-4=0`, then the value of `a+b` is

A

`-2`

B

`0`

C

`2`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
B
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