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Let tangents at P and Q to curve y^(2)-...

Let tangents at P and Q to curve `y^(2)-4x-2y+5=0` intersect at T. If S(2, 1) is a point such that `(SP)(SQ)=16`, then the length ST is equal to :

A

3

B

4

C

5

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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