Question

计算:(a+b-c)^2 计算:(a+b-c)^2 和(a-b+c)(a-b-c)和(a-b-c)(a+b+c) 和 (

Answer 1

#include "stdio.h"

void main(){

scanf("%f,%f,%f,%f",&a,&b,&c,&d);

printf("%fn",2*(a+b-c));

printf("%fn",(a-b+c)*(a-b-c));

printf("%fn",(a-b-c)*(a+b+c));

printf("%fn",(a+b-c)*(a-b+c));

printf("%fn",(a-b+c-d)*(a-b-c+d));