Simplify the complex fraction

We need to find a common denominator for the bottom half of the fraction. To do so, we will first factor .



Notice that both denominators have a x+1 in common. To get the common denominator, we need to multiple the  by its missing piece, (x-4)



Combine:



When dividing two fractions, we can flip the second one and multiply.

 ×

There is an (x+1) in the numerator and denominator that cancel.