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How do I apply partial fraction expansion on $\dfrac{K}{(a+bz^{-1})(x+yz)}$?
I want to apply partial fraction expansion on $\dfrac{K}{(a+bz^{-1})(x+yz)}$. I'm not able to do it in the standard way, because one term has $z^{-1}$ term and the other has $z$. What is the approach ...