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.
Answer: