化简√x³+6x²y+9xy²(x>=0,y>=0)
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化简√x³+6x²y+9xy²(x>=0,y>=0)化简√x³+6x²y+9xy²(x>=0,y>=0)化简√x³+6x²
化简√x³+6x²y+9xy²(x>=0,y>=0)
化简√x³+6x²y+9xy²(x>=0,y>=0)
化简√x³+6x²y+9xy²(x>=0,y>=0)
√(x³+6x²y+9xy²)
=√[x(x+3y)²]
=|√x(x+3y)|
=(x+3y)√x
x>=0,y>=0
x+3y>=0
原式=√[x(x+3y)²
=|x+3y|√x
=(x+3y)√x