(2x/3y²)²÷(-x/y)³

(2x/3y²)²÷(-x/y)³
(2x/3y²)²÷(-x/y)³

(2x/3y²)²÷(-x/y)³
(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)

=4x²/9y的4次方×y³/x³
=4/9xy

(2x/3y²)²÷(-x/y)³
=4x^2/9y^4×(-y^3/x^3)
=-4y/9x

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(2x/3y²)²÷(-x/y)³
= - 4 / (9xy)