1)ax^2 + bx^2 + ax - cx^2+ bx - cx=ax^2+bx^2-cx^2+ax+bx-cx=x^2(a+b-c)+x(a+b-c)=(a+b-c)(x^2+x)=x(x+1)(a+b-c)
2)ax^2 + bx^2 - bx - ax + cx^2 - cx=x^2(a+b+c)-x(a+b+c)=x(x-1)(a+b+c)
