(2x/3y²)²÷(-x/y)³
问题描述：
(2x/3y²)²÷(-x/y)³
答
(2x/3y²)²÷(-x/y)³
= - 4 / (9xy)
答
(2x/3y²)²÷(-x/y)³
=4x^2/9y^4×(-y^3/x^3)
=-4y/9x
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答
(2x/3y²)²÷(-x/y)³
=(4/9*x^2/y^4)÷(-x^3/y^3)
=-4/9*x^2/y^4*y^3/x^3
=-4/(9xy)
答
=4x²/9y的4次方×y³/x³
=4/9xy