Y^4-y^3+y-1 упростить

Question

Y^4-y^3+y-1 упростить

Answer 1

Yˇ4-yˇ3 +y -1=yˇ3(y-1)+(y-1).1=(y-1)(yˇ3+1)=
=(y-1)(y+1)(yˇ2-y+1)