MathematicsMedium64×since 2002Q2950If nnn is a positive integer, then (3+1)2n−(3−1)2n{\left( {\sqrt 3 + 1} \right)^{2n}} - {\left( {\sqrt 3 - 1} \right)^{2n}}(3+1)2n−(3−1)2n is :Aan irrational numberBan odd positive integerCan even positive integerDa rational number other than positive integersCheck answerSkip