Ответ:\(a^2-ab=a(a-b)\);\(x^3+x^2=x^2(x+1)\);\(mn-n^2=n(m-n)\);\(x^4-x^2=x^2(x^2-1)\);\(c^5+c^3=c^3(c^2+1)\);\(y^3-y^4=y^3(1-y)\).