2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 14:13:27
![2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚](/uploads/image/z/1163231-71-1.jpg?t=2mn%EF%B9%992b-a%26%23178%3B%EF%B9%9A%2B3m%26%23178%3Bn%EF%B9%99a%26%23178%3B-2b%EF%B9%9A)
2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚
2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚
2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚
是不是化简呢?如果是求值,条件不够呢
化简的话,步骤如下
原式=2mn﹙2b-a²﹚+3m²n﹙a²-2b﹚
=-(2b-a²)3m²n+2mn﹙2b-a²﹚
=(2b-a²)(2mn-3m²n)
=mn(2b-a²)(2-3m)
欢迎追问~