The coefficient of \(\dfrac{1}{z}\) in the Laurent's series expansion of the function
\[
f(z)=\frac{1}{z^2(1-z)}
\]
about \(z=0\), is ____.
Show Hint
Remember the standard expansion:
\[
\boxed{
\frac1{1-z}
=
1+z+z^2+\cdots
\qquad(|z|<1)
}
\]
The coefficient of \(\dfrac1z\) in a Laurent series is called the residue at that point.