Task 3: a) A second-degree polynomial in x is given by the
expression = + + , where a, b, and c are known numbers and a is not
equal to 0. Write a C function named polyTwo (a,b,c,x) that
computes and returns the value of a second-degree polynomial for
any passed values of a, b, c, and x. b) Include the function
written in part a in a working program. Make sure your function is
called from main() and...