鲁山灵异事件:(3mn+1)(3mn-1)-(3mn-2)^2
来源:百度文库 编辑:高校问答 时间:2024/05/24 04:27:01
因式分解,需要过程。谢谢!
原式=9m^2n^2-1-(18m^2n^2-12mn+8)
=-(9m^2n^2-12mn+9)
=-3(mn-1)*(mn-3)
原式=9m^2n^2-1-(18m^2n^2-12mn+8)
=-(9m^2n^2-12mn+9)
=-3(mn-1)*(mn-3)