# How do you differentiate #f(x)= (9-x)(5/(x^2 -4))# using the product rule?

##### 2 Answers

May 26, 2018

#### Answer:

#### Explanation:

After the product rule

we get

which simplifies to

May 26, 2018

#### Answer:

#### Explanation:

Apply product rule,

Differentiate inner terms,

Simplify,

Common denominator,

Simplify,

Combine,

Simplify,

Factorise,