1.

If x = [1/ (√5 + √3)], y = [1/ (√7 + √5)] and z = [1/ (√7 + √3)], then what is the value of (x + y + z)?

A. 3/4(√7 - √3)
B. √5 - √3
C. √7 + √5
D. 1/2(√7 + √3)
Answer» B. √5 - √3


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