Question

sir doubt please solve​

Answer 1

Step-by-step explanation:

It is given that,

a 2 −1/a 2=5

So,

By using the formula, (a+b) 2

[a 2−1/a 2 ] 2 =a 4 +1/a 4 −2

[a 2 −1/a 2 ] 2 +2=a 4 +1/a 4

Substitute the value of a 2 −1/a 2 =5, we get

5^2 +2=a 4+1/a 4

a 4 +1/a 4 =25+2

=27