Given that the real zeros are x = 1 and x =-13, find the complex zeros of the polynomial function, write f in factored form. f(x)=x4 + 12x3-9x2 + 48x-52 The real zeros are x = 1 and x =-13 Convert the real zeros into factors, multiply the factors together and then use long division to find the reduced polynomial. Use the reduced polynomial to find the remaining zeros. The remaining complex zeros of fare (Use a comma to separate answers as needed.) Use the zeros to write f in factored form Rx).□ (Factor completely.)