If there is more than one answer, separate them with commas. If the answer is an interval, enter it in the form (a, b), (a, b), (a, b), or [a, b]. Write-infinity for-co and infinity for . Click here for more help on entering intervals. Let f(x) be the polynomial f(x) = (x+8)(x 1)(x6 + 5). What is the degree of the polynomial? For what value(s) of x is the polynomial equal to zero? On what interval(s) is the polynomial negative? I credit on this problem