查人人中国名人网电动机的效率:初一数学题 急！！！
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/02 20:00:12
5a^2b(x-y)^3-30ab^2(y-x)^2
5a^2b(x-y)^3-30ab^2(y-x)^2
=5ab(y-x)^2(ax-ay-6b)
5a^2b(x-y)^3-30ab^2(y-x)^2
=5ab(x-y)^2[a(x-y)-6b]
=5ab(x-y)^2(ax-ay-6b)
5a^2b(x-y)^3-30ab^2(y-x)^2
=5ab(x-y)^2[a(x-y)-6b]
=5ab(x-y)^2(ax-ay-6b)