The length of a rectangle is (5x^2 + 4x - 4) units, and it’s width is (4x^3 - 2x + 6) units.

Part A: what is the area of the rectangle? Show your work.

Part B: is the answer for part A an example of polynomials being closed under an operation? Justify your answer.

Part C: what is the degree and classification of the expression obtained in part A?

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

the answer is 40.

proof: