1. The z-transform of y(n) is Y(z) = 2z² + z + 1 + 2z^-1 + 3z^-2, /z/ 0. Find the following sequences. a. y(4 - n) + y(n - 4) b. ( 1 + n + n²)y(n) c. (1/3)ⁿy(n - 4) d. y(n + 2)*y(n - 2) e. y(3 - n)*y(n - 3)* ( 1 + n + n²)y(n) Thank you.