III. Factor each polynomial completely using any n needed. (2 points each)
1. y=(x-1)(x2 - 5x + 6)
2. y= (x2 + x - 6) (x2 - 6x + 9)
3. y= (2x2 - 5x + 3)(x - 3)
4. y= (x4 + 16)
5. y= x3 + x2 - 12x​