Question

if x=√5+2thenx-1/x=​

Answer 1

Step-by-step explanation:

root 5+2-1/root 5+2

=root 5+1/root 5+2

hope it is helpful.

Answer 2

Solution :- 4

Given :-

x = √5 + 2

To Find out :-

Value of (x - 1/x)

Explanation :-

according to the question ,

x - 1/x = (√5 + 2) - 1/(√5 + 2)

= { (√5 + 2)² - 1 } / (√5 + 2)

= ( 5 + 4 + 4√5 - 1 } / (√5 + 2)

= (8 + 4√5) / (√5 + 2)

= 4(√5 + 2) / (√5 + 2)

= 4