Question

If x = √5 + 2, find the value of x-1/x?​

Answer 1

Answer:

4

Step-by-step explanation:

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(2+√5)/√5+2

=4

Answer 2

Answer:0.763 approx.

Step-by-step explanation:

x = √5 +2

x = 2.236 +2

x = 4.236 approx.

=> (x-1)/x

= (4.236-3.236)/4.236

=. 3.236/4.236

=. 0.763 approx.