x+y=6 xy=-3 x^2y+xy^2=?
问题描述:
x+y=6 xy=-3 x^2y+xy^2=?
答
x^2y+xy^2
=xy(x+y)
=-3*6
=-18
x+y=6 xy=-3 x^2y+xy^2=?
x^2y+xy^2
=xy(x+y)
=-3*6
=-18