Question

If d-1/d=6 evaluate d+1/d​

Answer 1

`{ \boxed{\boxed{\begin{array}{cc} \maltese  \bf \: given \: \\ \\ \rm \: d - (1)/(d) = 6 \\ \\ \bf \: now \\ \\ \rm {(d + (1)/(d) })^(2) = ( {d - (1)/(d) })^(2) + 4 * d * (1)/(d) \\ \\ = {6}^(2) + 4 \\ \\ = 36 + 4 \\ \\ = 40 \\ \\ \rm \: d + (1)/(d) = \pm √(40) \end{array}}}}`