Compute the z-transform of the sequences and determine the corresponding region of convergence x(n)= u(-n + 5) Oz5/[1-z] with ROC /z/ < 1 Oz5/[1+z] with ROC /z/ > 1 Oz5/[1-z] with ROC /z/ < 1 Oz5/11-z] with ROC /z/ < 1 O2z5/11+z] with ROC /z/ > 1