3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)(1)3m²n+5mn²+6nm²-4n²m-n²m(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²快
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 18:12:33
![3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)(1)3m²n+5mn²+6nm²-4n²m-n²m(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²快](/uploads/image/z/7294733-53-3.jpg?t=3m%26%23178%3Bn%2B5mn%26%23178%3B%2B6nm%26%23178%3B-4n%26%23178%3Bm-n%26%23178%3Bm%28%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%29%EF%BC%881%EF%BC%893m%26%23178%3Bn%2B5mn%26%23178%3B%2B6nm%26%23178%3B-4n%26%23178%3Bm-n%26%23178%3Bm%EF%BC%882%EF%BC%892%2F3a%26%23178%3B-6a%26%23179%3B%EF%BC%8B5a-1%2F4%2B5a%26%23179%3B-1%2F2-4%2F3a%26%23178%3B%E5%BF%AB)
3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)(1)3m²n+5mn²+6nm²-4n²m-n²m(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²快
3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)
(1)3m²n+5mn²+6nm²-4n²m-n²m
(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²
快
3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)(1)3m²n+5mn²+6nm²-4n²m-n²m(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²快
(1)3m²n+5mn²+6nm²-4n²m-n²m
=(3m²n+6nm²)+(5mn²-4n²m-n²m)
=9m²n
(2)2/3a²-6a³+5a-1/4+5a³-1/2-4/3a²
=(2/3a²-4/3a²)-(6a³-5a³)+5a-(1/4+1/2)
=-2/3a²-a³+5a-3/4