If x = [1/(âˆš5 + âˆš3)], y = [1/(âˆš7 + âˆš5)] and z = [1/(âˆš7 + âˆš3)], then what is the value of (x + y + z)?

If x = [1/(âˆš5 + âˆš3)], y = [1/(âˆš7 + âˆš5)] and z = [1

1.	If x = [1/(âˆš5 + âˆš3)], y = [1/(âˆš7 + âˆš5)] and z = [1/(âˆš7 + âˆš3)], then what is the value of (x + y + z)?
A.	3/4(âˆš7 â€“ âˆš3)
B.	âˆš5 â€“ âˆš3
C.	âˆš7 + âˆš5
D.	1/2(âˆš7 + âˆš3)
Answer» B. âˆš5 â€“ âˆš3