hello i need help with these advanced functions questions can someone please help me all information and instructions are provided below thank you (all questions are in order thank you)

1. For the polynomial function f (x) = -3x3 - 21x2 + 72x + 540 a) Determine the roots and their multiplicity. b) Describe the end behaviour of the function. c) Give an example of a polynomial that belongs to the same family. 2. For the function f(x) = a(x - 5)'(x + 1)(x - 2) , explain what you know about the number of zeros, concavity and number of turning points, and end behaviors, given that a is some constant