3x + by-1 = 0 রেখাটি x²+ y²-8x-2y+4 = 0 বৃত্তকেস্পর্শ করলে৮ এর মান কত?

A 3 or \( \frac{1}{2} \)

B 2 or \( \frac{1}{6} \)

C -2 or \( -\frac{1}{5} \)

D 3 or 2

Solution

Correct Answer: Option B

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