Find the inverse z-transform of
a. X(z)=1(1-0.75z-1)(1-0.25z-1), x[n] is noncausal.
b. X(z)=2z-1(1-0.50z-1)2(1-0.30z-1), x[n] is causal.
a. x(z)=(1)/((1-0.75z^(-1))(1-0.25z^(-1))),x[n] is noncausal.
b. x(z)=(2z^(-1))/((1-0.50z^(-1))^(2)(1-0.30z^(-1))),x[n] is causal.