If n is a positive integer, then (√3+1)2n+1 + (√3−1)2n+1 is
A. an even positive integer
B. a rational number
C. an odd positive integer
D. an irrational number
Answer:A
If n is a positive integer, then (√3+1)2n+1 + (√3−1)2n+1 is
A. an even positive integer B. a rational number C. an odd positive integer D. an irrational number