Question

x is equal to 3 + under root 8
Find- x-1/x, under root x + 1 upon under root x , X square + 1 upon x square ​

Answer 1

Step-by-step explanation:

x = 3+√8

1/x = 3-√8

x-1/x = 3+√8 - (3-√8)

= 2√8

(√x+√1/x)^2 = (√x)^2 + (1/√x)^2 + 2 * √x * 1/X

= X +1/x + 2

=3+√8 +3-√8 +2

= √8

=2√2

x^2 + 1/x^2

=(3+√8)^2 + (3-√8)^2

=9+8+6√8 + 9+8-6√8

=34

Answer 2

Answer:

find 1/x by rationalizing the denominator and then find answers