$\"\"$

The polynomial is $\"\"$ .

Find the factors.

$\"\"$ (Original expression)

$\"\"$ and $\"\"$ (First and last terms are perfect squares)

$\"\"$ (Middle term equals to $\"\"$ )

$\"\"$ is perfect square trinomial.

$\"\"$ (Factor using pattern)

$\"\"$

Yes, $\"\"$ is a perfect square trinomial.