1) (-1)⁴ + (-1)⁵=1-1=0
2) -1⁴ + (-1)⁵=-1-1=-2
3) (-1)⁵ - (-1)⁴=-1-1=-2
4) -1⁵ + (-1)⁴=-1+1=0
5) (-1)⁹ - (-1)⁵ - (-1)⁴=-1+1-1=-1
1) 1-1=0
2)-1-1=-2
3)-1-1=-2
4)-1+1=0
5)-1+1-1=-1
