Question

If x is equal to 3 minus 2 root 2 then root x minus one by root x is

Answer 1

Answer:

The answer is -2

Step-by-step explanation:

We know,

x = 3-2v2

then, rootx -1/rootx

Therefore, we have to find the root of 3-2root 2

                      = 2+1-2v2

                       = (v2 -1)^2

                           =  v2-1

Putting this in the expression,

v2-1  -  (1/v2-1)

=   after rationalising,

=  v2 -1 - (v2 + 1)

= v2-1 -v2-1

=  -2

Hope this helps you...