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দেওয়া আছে, P² - 1/P² = 51 or⃗,⃗(P² - 1/P²)² = 51² or, (P² + 1/P²)² - 4 = 2601 or⃗,P²+1/P² = √( 2605) = 51.04 or, ( p-1/p)² + 2 = 51.04 or, p- 1/p = 7.002 (almost 7) Now, p²- 6p -1 = p²-1 -6p = p(p- 1/p - 6) = p(7-6) = p so, p/(p²- 6p -1)= p/p = 1.(Ans) না বুঝলে মন্তব্য করবেন।
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