-3 | 1 -3 -5 39 | -3 18 -39 ------------ 1 -6 13 0 So now you have factored the polynomial f(x) this far: The zeros are found by setting this equal to 0: give the zero -3 which was given. will give the other zeros. But this will not factor so we must use the quadratic formula: with , , and The other zeros are and Edwin