化简√2x^2y^3;
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 23:40:24
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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,所以用绝对值表示
x²y³≥0得y≥0
于是
√(2x²y³)
=√[(x²y²)*2y]
=|x|y√(2y)
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