$\"\"$

The limit of the function is $\"\"$ .

Find the factors of denominator.

$\"\"$

So $\"\"$ .

The limit $\"\"$ will exist if $\"\"$ is a factor of $\"\"$ .

To find the value of $\"\"$ , substitute $\"\"$ in $\"\"$ and make it to zero.

$\"\"$

Substitute $\"\"$ in the limit of the function.

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .