添上适当的运算符号或括号,使等号成立4.2 4.2 4.2 4.2 4.2 =04.2 4.2 4.2 4.2 4.2 =14.2 4.2 4.2 4.2 4.2 =2

问题描述:

添上适当的运算符号或括号,使等号成立4.2 4.2 4.2 4.2 4.2 =0
4.2 4.2 4.2 4.2 4.2 =1
4.2 4.2 4.2 4.2 4.2 =2

(4.2-4.2)*4.2*4.2*4.2=0
(4.2-4.2)*4.2+4.2/4.2=1
(4.2-4.2)+(4.2+4.2)/4.2=2
( (4.2*4.2/4.2+4.2)/4.2=2 )

(4.2-4.2)*4.2*4.2*4.2=0
(4.2-4.2)*4.2+4.2/4.2=1
(4.2*4.2/4.2+4.2)/4.2=2