If A and B respectively denote the sum of the odd terms and sum of the even terms in the expansion of `(x+a)^n`, then the value of `(x^2-a^2)^n`, is equal to

Explanation

If `A` and `B` denote respectively the sums of odd terms and even terms in the expansion `(x+a)^{n}`


Then,`(x+a)^{n}=A+B . .(1)`




`(x-a)^{n}=A-B ldots(2)`


Multplying both the equations we get
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