1) (x-1)^6 - 64 = ((x-1)^3 + 8)((x-1)^3 - 8) = (x+2)((x-1)^2 - 2(x-1) + 4)((x-1)^2 + 2(x-1) + 4)
2) 1 - (y+2)^6 = (1 - (y+2)^3)(1 + (y+2)^3) = (1 - y - 2)(1 + y + 2)((y+2)^2 - 2(y+2) + 4)((y+2)^2 + 2(y+2) + 4)
1) (x-1)^6 - 64 = ((x-1)^3 + 8)((x-1)^3 - 8) = (x+2)((x-1)^2 - 2(x-1) + 4)((x-1)^2 + 2(x-1) + 4)
2) 1 - (y+2)^6 = (1 - (y+2)^3)(1 + (y+2)^3) = (1 - y - 2)(1 + y + 2)((y+2)^2 - 2(y+2) + 4)((y+2)^2 + 2(y+2) + 4)