计算:27^2*9÷(-3)^18

问题描述:

计算:27^2*9÷(-3)^18

3^(-10)

27^2*9÷(-3)^18
=(3³)²×3²÷3^18
=3^6×3²÷3^18
=3^8÷3^18
=3^(-10)