-(a^2n)^5 n·n^4-n^2·n^3

问题描述:

-(a^2n)^5 n·n^4-n^2·n^3
上课没咋听懂
n·n^4-n^2·n^3

-(a^2n)^5
=-a^(2n×5)
=-a^(10n)
n·n^4-n^2·n^3
=n^5-n^5
=0