... Tong(DaThuc A,DaThuc B);DaThuc Hieu(DaThuc A,DaThuc B);DaThuc Tich(DaThuc dt1,DaThuc dt2);DaThuc Thuong(DaThuc bichia,DaThuc chia);main(){DaThuc A,B ,C, D,E,F;cout<<"Da thuc A co ";nhap(A);xuat(A);cout<<"\nDa ... dt3;}DaThuc Thuong(DaThuc bichia,DaThuc chia){DaThuc tam,A,B; A.n=0;B.n=0;int i=0,bac=bichia.a[0].somu;if(bac<chia.a[0].somu) cout<<"Khong the chia";while(bac>=chia.a[0].somu){tam.n=1;tam.a[0].heso=bichia.a[0].heso/chia.a[0].heso;tam.a[0].somu=bac-chia.a[0].somu;A=Tong(A,tam);A.n++;bichia=Hieu(bichia,Tich(tam,chia));bac=bichia.a[0].somu;if(bichia.n==1&&bichia.a[0].heso==0) ... chia";while(bac>=chia.a[0].somu){tam.n=1;tam.a[0].heso=bichia.a[0].heso/chia.a[0].heso;tam.a[0].somu=bac-chia.a[0].somu;A=Tong(A,tam);A.n++;bichia=Hieu(bichia,Tich(tam,chia));bac=bichia.a[0].somu;if(bichia.n==1&&bichia.a[0].heso==0)...