有理数加减混合运算里的一道题
在数学活动课上,王老师给同学们出了一道题：规定一种新运算☆,对于任意有理数A和B,有A☆B=A-B+1.请你根据新运算,计算(2☆3)☆(-2）的值.
人气：349 ℃ 时间：2020-04-12 17:25:01
解答
(2☆3)☆(-2）
=2☆3=2-3+1=0
0☆（-2）
=0-（-2）+1=2+1=3
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