折冬天衣服的方法视频:因式分解2m(x-3)+(x-3) 5(x-y)^3+10(y-x)^2 -ab(x-y)^3+a(y-x)^3-ac(x-y)^3 帮我哦

来源:百度文库 编辑:查人人中国名人网 时间:2024/04/29 02:34:55
帮我哦
2m(x-3)+(x-3)
5(x-y)^3+10(y-x)^2
-ab(x-y)^3+a(y-x)^3-ac(x-y)^3
这是3题哦

(1)原式=(2m+1)(x-3)
(2)原式=5(x-Y)^2[(x-y)-2]
=5(x^2-2xy+y^2)(x-y-2)
(3)原式=-a(x-y)^3(b+1+c)
=-a(x^3-3x^2y-xy^2-y^3)(b+1+c)