Разложи на множители c³-y²c-yc²+y³

c^3-y^2c-yc^2+y^3=c^2(c-y)-y^2(c-y)=(c-y)(c^2-y^2)=(c-y)(c-y)(c+y)=(c+y)(c-y)^2

Vashe zadanie resheno