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।