已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值

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已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值已知x+y=4,xy=2,求2x^3y+4x^2y^2+2x

已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值
已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值

已知x+y=4,xy=2,求2x^3y+4x^2y^2+2xy^2的值
2x^3y+4x^2y^2+2xy^2
=2xy(x²+2xy+y²)
=2xy(x+y)²
=2*2*4²
=64