计算:(2)(3xy²分之a³)²÷(-2x²分之9y)³
问题描述:
计算:(2)(3xy²分之a³)²÷(-2x²分之9y)³
答
(a³/3xy²)²÷(9y/-2x²)³
=(a^6/9x^2y^4) ÷(-729y^3/8x^6)
=(a^6/9x^2y^4) x(-8x^6/729y^3)
= -8x^4a^6/6561y^7