化简√2x^2y^3;
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化简√2x^2y^3;化简√2x^2y^3;化简√2x^2y^3;∵2x^2y^3≥0∴y≥0∴√2x^2y^3=│x│y√2y√2x^2y^3=|x|y√2y由于x可能是正也可能是负，所以用绝对值表
化简√2x^2y^3;
化简√2x^2y^3;
化简√2x^2y^3;
∵2x^2y^3≥0
∴y≥0
∴√2x^2y^3
=│x│y√2y
√2x^2y^3=|x|y√2y
由于x可能是正也可能是负，所以用绝对值表示
x²y³≥0得y≥0
于是
√(2x²y³)
=√[(x²y²)*2y]
=｜x｜y√(2y)
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