How would I do this?

In Exercises 11 - 20, nd the real zeros of the given polynomial and their corresponding multiplic- ities. Use this information along with a Sign chart to provide a rough sketch of the graph of the polynomial. Compare your answer with the result from a graphing utility. 11. a(a:) = m(:v + 2)2 12. g(:v) = 53(33 + 2)3