Question

can anyone help me with this question with method​

Answer 1

ok ,

please mark brainliest if you like

#here'syouranswer

here,

${y}^{2} + \frac{1}{ {y}^{2} } = 11$

-------first equation

now,

as ,

${(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ = > \: a - b = \sqrt{ {a}^{2} + {b}^{2} - 2ab} \\ = > \: y - \frac{1}{y} = \sqrt{ {y}^{2} + { \frac{1}{y} }^{2} - 2(y)( \frac{1}{y} )} \\ = y - \frac{1}{y} = \sqrt{11 - 2} (as \: by \: first \: equation) = \sqrt{9} = 3 \\ y - \frac{1}{y} = 3$

Answer 2

Answer:

P.F.A the answer below: