How do I form a polynomial from the zeroes 5, -i, and -2+i with a degree of 5. I am very confused as to how to do it backwards and would need step by step directions

The accompanying bar graph shows the net earnings (in millions of dollars) for a certain company. The polynomial 4.18x - 98.5x + 799x - 1627 gives a good approximation of the company's net earnings in year x, where x=7 corresponds to 2007, and so on (7sxS 16). 3500- 3000- Assuming that the polynomial approximation remains accurate later years, use it to estimate the company's net earnings in 2019. 2500- 2000 1500- W 1000- 500- 07 08 09 10 11 12 '13 14 15 16 Which x-value corresponds to 2019? x= (Type a whole number.) Use the polynomial to determine the net eanings in 2019. The net earnings are approximately $ million. (Round to the nearest integer as needed.) Enter your answer each of the answer boxes. MacBook Air %23 2 3 4 5 7 R т Y Q %3 K F く V B Net Earnings (Smillions) ノ つ

A fourth degree polynomial has -2, -3, 2i, -2i as it’s zeros. Write the polynomial as a product of linear factors. What is the polynomial in expanded form ?

Here is an example of the question. I need to find the polynomial expression that represents the total area of the table. The answer I got was 3(2x+3)(x-2) and it’s incorrect. I posted a question previously and it was rejected saying the question was incomplete. I’m trying to understand what I did wrong. I know it’s states that the table is divided into three sections so I would multiply 3 to 2x+3 right? I’m so concerned please help.