we are asked to determine the factor for the given expression. We can fill the given table in the following way:
What we have is the following:
On the top left square we have:
On the top right we have:
On the bottom left we have:
And in the bottom right we have:
Therefore, inside the square we have:
Adding all the terms in the squares we get:
Therefore, The last term in the sum is 36.
The factored form is the following:
