What is the simplified form of the following expression?

Part a)

therefore

the answer part a) is equal to

Part b)

therefore

the answer Part b) is equal to

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.   .

expression #3 is not equivalent. the others are.