Question

For expression n(2n-1)(2n+1) ; n>1 is divisible by

Answer 1

Answer:

bro question Kya h samajh me nhi aaya

(2n-1)(2n+1)

{Using identity:-(a+b)(a-b)}

So,

(2n-1)(2n+1)=(a+b)(a-b)

(a+b)(a-b)=a^2-b^2

therefore,

(2n-1)(2n+1)=4n^2-(1)^2

n(4n^2-1)

=> 4n^3-n

Hence,n is not greater than 1.n=1