计算(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³要求解题过程、

计算(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³要求解题过程、
计算(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³
(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³要求解题过程、

计算(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³(2/5x²y)³*(1/2x²y)²÷(-1/5xy)³要求解题过程、
((2/5)*x²y)³*((1/2)*x²y)²÷((-1/5)*xy)³
=(8/125)*x^6y³*(1/4)*x^4y²÷[(1/125)*x³y³]
=-8*x³*(1/4)*x^4y²
=-2*x^7*y²