Find the value of `(-1)^(n)+(-1)^(2n)+(-1)^(2n_1)+(-1)^(4n+2)`, where n is any positive and integer.

Show that the middle term in the expansion of (1+x)^(2n) is (1.3.5….(2n-1))/(n!) 2^(n)x^(n) , where n is a positive integer.

Show that the middle term in the expansion of (1+x)^(2n) is ((1.3.5...2n-1)))/(n!)2^(n)x^(n), where n is a positive integer.

The value of (n!)^(n) if n+(n-1)+(n-2)=n(n-1)(n-2) where n^(3)>9, a positive number is

Show that the middle term in the expansion of (1+x)^(2n) is (1.3.5...*(2n-1))/(n!)2nx^(n)2nx^(n) where n is a positive integer.

Show that the middle term in the expansion of (1+x)^(2n) is 1.3.5…(2n-1)/n! 2n.x^n , where n is a positive integer.

If the middle term in the expreansion of (1+x)^(2n) is ([1.3.5….(2n-1)])/(n!) (k) , where n is a positive integer , then k is .

Show that the middle term in the expansion of (1 + x)^(2n) is (1.3.5.........(2n - 1))/(n!)2^(n)x^(n) , where n is a positive integer.

Show that the middle term in the expansion of (1+x)^2n is 1.3.5…(2n-1)/n! 2n.x^n , where n is a positive integer.