计算:y×(y/x)^3÷[-(x^2)/y]^-2

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/12 16:28:47
计算:y×(y/x)^3÷[-(x^2)/y]^-2
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计算:y×(y/x)^3÷[-(x^2)/y]^-2
计算:y×(y/x)^3÷[-(x^2)/y]^-2

计算:y×(y/x)^3÷[-(x^2)/y]^-2
y×(y/x)^3÷[-(x^2)/y]^-2
=y×y^3/x^3÷[-y/(x^2)]^2
=y^(1+3)/x^3÷[y/x^2]^2
=y^4/x^3÷[y^2/x^4]
=y^4/x^3*x^4/y^2
=y^(4-2)*x^(4-3)
=xy

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