作业帮化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²(X-Y)视为整体
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/01 04:05:50
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²(X-Y)视为整体
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
(X-Y)视为整体
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²(X-Y)视为整体
3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
=(3-6)(X-Y)²+(-4+7)(X-Y)
=-3(X-Y)²+3(X-Y)
3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
=3(X-Y)-3(X-Y)²
=3(X-Y)(1-X+Y)