# Question #65e7a

##### 1 Answer

Please see the explanation for the steps leading to the answer:

#### Explanation:

GIven:

Then

Substituting into the difference quotient:

Multiply by 1 in the form

Multiply by the 1s in the upper numerators and h in the lower denominator:

Now, I will show you which factors cancel in the upper part:

Remove the canceled factors:

Distribute the implicit -1:

When we combine like terms in the numerator, we are left with -h:

Now it will be safe for you to let