a. (x2−2x+1):(x−1) = x + 1
b. (x3+2x2+x):(x2+x) = x + 1
c. (−16x4+1):(−4x2+1) = 4x2+1
d. (−32x5+1):(−2x+1) = 16x4+8x3+4x2−2x+1