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Applying the property of exponents, $\displaystyle a^{-n}=\frac{1}{a^n}$, where $n$ is a number
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$\frac{1}{\left(1-z^{-1}\right)\left(1-\frac{1}{5}z^{-1}\right)z^{3}}$
Learn how to solve simplification of algebraic expressions problems step by step online. Simplify the expression xz=(z^(-3))/((1-z^(-1))(1-1/5z^(-1))). Applying the property of exponents, \displaystyle a^{-n}=\frac{1}{a^n}, where n is a number. Applying the property of exponents, \displaystyle a^{-n}=\frac{1}{a^n}, where n is a number. Combine 1+\frac{-1}{z} in a single fraction. Combine 1+\frac{-1}{5z} in a single fraction.