(3分之1xy)²(-12x²y²;)÷(-3分之4x³y)

问题描述:

(3分之1xy)²(-12x²y²;)÷(-3分之4x³y)

(3分之1xy)²(-12x²y²)÷(-3分之4x³y)
=1/9x^2y^2×(-12x^2y^2)÷(-4/3x^3y)
=1/9×(-12)×(-3/4)×x^(2+2-3)×y^(2+2-1)
=xy^3