$\"\"$

The trinomial expression is $\"\"$ .

1) The first term is perfect square: $\"\"$ .

2) The last term is perfect square: $\"\"$ .

3) The middle term equal to 2 (2y) ( $\"\"$ 11): $\"\"$ .

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

Then write the expression in the form: $\"\"$ .

$\"\"$

$\"\"$ (The perfect square: $\"\"$ ) $\"\"$

The solution is $\"\"$ .