3()3()3()4()3=0 括号里只能填“+” “-” “x”
问题描述:
3()3()3()4()3=0 括号里只能填“+” “-” “x”
答
3x3-3x4+3=0
或
3x3+3-4x3=0
或
3+3x3-4x3
不用谢我,我的名字叫雷锋