已知xy=-50,x+y=5之1,则x^2y+xy^2=
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已知xy=-50,x+y=5之1,则x^2y+xy^2=已知xy=-50,x+y=5之1,则x^2y+xy^2=已知xy=-50,x+y=5之1,则x^2y+xy^2=x^2y+xy^2=xy(x+y
已知xy=-50,x+y=5之1,则x^2y+xy^2=
已知xy=-50,x+y=5之1,则x^2y+xy^2=
已知xy=-50,x+y=5之1,则x^2y+xy^2=
x^2y+xy^2
=xy(x+y)
=-50*1/5
=-10
x²y＋xy²=xy﹙x＋y﹚=－50×1／5=－10
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