中科新闻网滨州钟点工招聘兼职:初一数学题 急！！！
来源：百度文库 编辑：中科新闻网 时间：2024/05/12 12:27:29
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)