BI TP NGN NG LP TRNH2.Bi tp phn cc thnh phn c bnGii phng trnh bc 2:#include#include#include#includeusing namespace std;int main(){double a,b,c,x1,x2;do{couta;coutb;coutc;}while(a==0);double d=b*b-4*a*c;a=(2*a);d=sqrt(d);if(d>=0){if(d>0){cout