已知a³=8,a=2
√b+2的相反数是0,b+2=0 b=-2
c是-1的立方根,c=-1
c/a-b+a/b-c+b/c-a的值
=-1/3+2/(-1)+(-2)/(-3)
=-1/3-2+2/3
=-5/3(c/a-b)+(a/b-c)+(b/c-a)的值我打错了(c/a-b)+(a/b-c)+(b/c-a)的值=-1/4+2/(-1)+(-2)/(-3)=-1/4-2+2/3=-19/12