Question

solve the math please​

Answer 1

Step-by-step explanation:

2ncn = 2n!/(n!×n!)

x^2n-n = x^n

2n! x^n

____× _____×(-1)^n

(n!)^2 x^n

if n is even the value is 2n!/(n!)^2, n is odd -(2n!)/(n!)^2