79. Group Activity Work in groups of three. Graph f(x)=x4+x3−8x2−2x+7.
(a) Use grapher methods to find approximate real number zeros.
(b) Identify a list of four linear factors whose product could be called an approximate factorization of f(x).
(c) Discuss what graphical and numerical methods you could use to show that the factorization from part (b) is reasonable.