简便计算 (18 19:5:39)(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)如果A▲B=3A-2B ,求2▲( 3▲4 )
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 13:53:52
![简便计算 (18 19:5:39)(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)如果A▲B=3A-2B ,求2▲( 3▲4 )](/uploads/image/z/442652-68-2.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+%2818+19%3A5%3A39%29%281%2B0.12%2B0.23%29X%280.12%2B0.23%2B0.34%29-%281%2B0.12%2B0.23%2B0.34%29X%280.12%2B0.23%29%E5%A6%82%E6%9E%9CA%E2%96%B2B%3D3A-2B+%2C%E6%B1%822%E2%96%B2%28%26%23160%3B3%E2%96%B24%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B+%29)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 13:53:52