Question

If x=√5+2,then x-(1/x) equals

Answer 1

Answer:

x-1/x=4

Step-by-step explanation:

Given,

x=root 5+2

Now,

x-2=root 5

Squaring both sides

2 2

(x-2) =(root 5)

2

=) x +4-4x=5

2

=) x -4x-1=0

2

=) x -1=4x

Dividing by x both sides we get

(x-1/x=4)

Thank you.....