已知a+b+c=0,求(b+c)⼀a + (a+c)⼀b + (a+b)⼀c的值

2025-04-05 18:04:42
推荐回答(1个)
回答1:

(b+c)/a + (a+c)/b + (a+b)/c

=(a+b+c-a)/a + (a+b+c-b)/b +(a+b+c-c)/c

=-a/a+(-b/b)+(-c/c)

=-3