(a) verify the given factor(s) of f (x),
(b) find the remaining factors of f (x),
(c)use your results to write the complete factorization of f (x),
(d)list all real zeros of f, and (e) confirm your results by using a graphing utility to graph the function.
Factors......................................................................Function
1. f (x) = x3 + 4x2 − 25x − 28 ........................................ (x − 4)
2. f (x) = 2x3 + 11x2 − 21x - 90 ..................................... (x + 6)