=2a²b+6ab²-3a²b+3-2a²b-2
=-3a²b+6ab²-2
----------------------------
3*(4+10-6)=24
2(a²b+3ab²)-3(a²b-1)-2a²b-2
2(a²b+3ab²)-3(a²b-1)-2a²b-2
顺便问一下24点的题
用3 4 -6 10这四个数运用运算符号或括号连接 每数只能用一次 用次方也行
没办法,老师事太多
顺便问一下24点的题
用3 4 -6 10这四个数运用运算符号或括号连接 每数只能用一次 用次方也行
没办法,老师事太多
数学人气:178 ℃时间:2020-03-29 02:21:00
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