Разложите ** множители)))

Question

Разложите на множители)))

---

Answer 1

Ac^4-c^4-ac^2+c^2= c^4(a-1)-c^2(a-1)= (c^4-c^2)(a-1)=((c^2)^2-c^2)(a-1)=
=(c^2-c)(c^2+c)(a-1)