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Pasted as C++ by registered user xujiayu ( 5 years ago )
#include <stdio.h>
#include <conio.h>
// giai phuong trinh bac 1 
int main()
{
	   float a,b;
	   //buoc 1 nhap a va b 

	   printf("\nnhap a :  ");
	   scanf ("%f",&a);

	   printf("\nnhap b : ");
	   scanf("%f",&b);
  
	   //buoc 2 xu ly 
	   
	   if(a == 0)
	   {
		   if(b == 0)
		   {
		      printf("\nvo so nghiem");
		   }
		   else
		   {
		      printf("\nvo nghiem");
		   }
	   }
	   else
	   {
		   float x = -b / a;
		   printf("\npt co nghiem x = %f",x);
	   
	   }

 
   getch();
   return 0;


}

 

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