1. Factor the following polynomial y = 3x4 - 22x3 + 31x2 + 40x -16
2. Find the real solutions of y = x3 + 8x2 + 1 lx - 20
3. Solve the equation in the complex number system. 10x2 + 6x +1= 0
4. Form a polynomial with real coefficients having the given degree and zeros. Degree: 5 Zeros: 1, multiplicity 3; 1 + i
5. Find the complex zeros of the polynomial function f (x) = x4 + 13x2 + 36