x=-2.5,y=-32,

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/16 07:01:55

x=-2.5,y=-32,

7x√(y/x)+2/y*√(xy³)-3y√(x/y)+ √(16xy)
=7√(x²y/x)+2*√(xy³/y²)-3√(xy²/y)+ 4√(xy)
=7√(xy)+2√(xy)-3√(xy)+ 4√(xy)
=10√(xy)
=10√[-2.5*(-32)]
=10√80
=40√5

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