合并同类项:(1)½mn-4mn+3mn(2)a³-2a²+3a-6-4a³+2a²+2a+2
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 02:13:51
![合并同类项:(1)½mn-4mn+3mn(2)a³-2a²+3a-6-4a³+2a²+2a+2](/uploads/image/z/1333385-17-5.jpg?t=%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%EF%BC%9A%EF%BC%881%EF%BC%89%26%23189%3Bmn-4mn%2B3mn%282%29a%26%23179%3B-2a%26%23178%3B%2B3a-6-4a%26%23179%3B%2B2a%26%23178%3B%2B2a%2B2)
合并同类项:(1)½mn-4mn+3mn(2)a³-2a²+3a-6-4a³+2a²+2a+2
合并同类项:(1)½mn-4mn+3mn(2)a³-2a²+3a-6-4a³+2a²+2a+2
合并同类项:(1)½mn-4mn+3mn(2)a³-2a²+3a-6-4a³+2a²+2a+2
(1)½mn-4mn+3mn=½mn-mn=-½mn
(2) a³-2a²+3a-6-4a³+2a²+2a+2
=a³-4a³-2a²+2a²+3a+2a-6+2
=-3a³+5a-4