(-a³ b^4)² / (ab²)=________

问题描述:

(-a³ b^4)² / (ab²)=________
若X^2n=3,那么x^6n=________

(-a³b^4)²/(ab²)
=a^6b^8/(ab²)
=a^5b^6
X^6n
=(x^2n)³
=3³
=27