# How do you simplify #\frac { z } { ( z - 1) ^ { 2} } - \frac { 1} { ( z - 1) ( z + 3) }#?

##### 1 Answer

Apr 14, 2017

#### Explanation:

To get a common denminatro, we multiply the numerator and the denominator of the first term by

By combining them together,

By simplifying the numerator,

By completing the square of the numerator,

I hope that this was clear.