Question

find the value of x^2 + 1/x^2 - 2 if x= root 6 + root 5​

Answer 1

Hope u will like my ans

See the image respectivaly to get an accurate ans

Answer 2

Answer:

20

Step-by-step explanation:

$( \sqrt{6} + \sqrt{5} ) ^{2} = 11 + 2 \sqrt{30}$

$(11 + 2 \sqrt{30} ) ^{ - 1} = 11 - 2 \sqrt{30}$

You can do rationalisation and check the second.

So if you add overall

You get 11+11-2=20