Answer
$2(3-y)(3+y)$
Work Step by Step
Factor out 2 to obtain:
$=2(9-y^2)$
Write 9 as $3^2$ to obtain:
$=2(3^2-y^2)$
The binomial is a difference of two squares.
RECALL:
A difference of two squares can be factored using the formula:
$a^2-b^2=(a-b)(a+b)$
Factor the difference of two squares using the formula above with $a=3$ and $b=y$ to obtain:
$=2(3-y)(3+y)$
