Answer:
-4n2+24n-9
Step-by-step explanation:
multiply each term by -4 to get -4n2+24n-9
9x2= 18
24x2= 48
48-18= 30
30 is the difference.
Since it is 9x2-24x2 it would be 18-48
So the answer would be -30.
This sentence is not clear. what are you trying to say?
You have not provided the diagram but I can tell you The area of a square or rectangle is Length times width. There's also likely a triangle part at the top the area of that is on half base times height. Sorry I couldn't help more <span />