合并多项式:5(x-y)²-(x-y)-8(x-y)²-3(x-y)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 21:15:48
合并多项式:5(x-y)²-(x-y)-8(x-y)²-3(x-y)
合并多项式:5(x-y)²-(x-y)-8(x-y)²-3(x-y)
合并多项式:5(x-y)²-(x-y)-8(x-y)²-3(x-y)
5(x-y)²-(x-y)-8(x-y)²-3(x-y)
=[5(x-y)²-8(x-y)²]-[(x-y)+3(x-y)]
=-3(x-y)²-4(x-y)
5(x-y)²-(x-y)-8(x-y)²-3(x-y)
=(5-8)(x-y)^2+(-1-3)(x-y)
=-3(x-y)^2-4(x-y)