Question

If x = 9+4√5, find the value of √x-1/√x
plzz tell how to solve​

Answer 1

+- 4

Step-by-step explanation:

x = 9+4√5 , 1/x = 9 - 4√5

x + 1/x = 18

x + 1/x + 2-2 = 18

(√x - 1/√x)^2 = 18 -2 = 16

√x - 1/√x = √16 = 4