Twice the difference between x and k is 2(x-k)
4×3=12
12+12=24, 3+3=6
24+6=30
So 12 × 3 = 36 square ft.
A binomial squared is written like

So, we have 
So, we want to complete the square 
We can add and subtract 9 to write

Step-by-step explanation:
I have attached the graph of the question. So this is the graph of the question and i also attached the solved question screen shot.
I hope you get the idea. Thanks
6p^3+29p^2+22p-21 i believe!