p-6/p = 1 হলে 6/(p2-p-1) এর মান কত?

A 7/6

B 6/7

C 6/5

D 5/6

Solution

Correct Answer: Option C

p-(6/p)=1

=> (p²-6)/p=1

=> p²-6=p

=> p²-p=6

∴6/(p²-p-1)

= 6/(6-1) [∵p²-p=6]

= 6/5

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