Question

已知x+y=7，xy=12，求x的平方y+xy的平方的值

最后一题，要过程，谢谢各位啦~\(≧▽≦)/~

Answer 1

x^2y+xy^2
=xy(x+y)
=12×7
=84

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Answer 2

x^2y+xy^2
=xy(x+y)
=12x7
=84

Answer 3

84
x^2y+xy^2=xy(x+y)=12*7=84