The binomial expansion:

a = 2y, b = 4 x^3, n = 4
( x )^3k = x^ 9
k = 3


Answer: the coefficient is
512.
the rectangle is but the line is not because the line has to have another side !
Answer:
AB = -10
Im confused is this what you wanted?
Answer:
Not a question but are you an online student????
Step-by-step explanation: