已知X+Y=17,XY=42,求X^2y+xy^2的值
问题描述:
已知X+Y=17,XY=42,求X^2y+xy^2的值
答
X^2y+xy^2
=xy(x+y)
=42*17
=714
已知X+Y=17,XY=42,求X^2y+xy^2的值
X^2y+xy^2
=xy(x+y)
=42*17
=714