（3/4a^n+1-1/2b^n)2ab-(2/3a^n+1-5/6b^n)3abn+1和n都是指数

分类: 作业答案 • 2021-12-19 15:52:31

问题描述：

（3/4a^n+1-1/2b^n)*2ab-(2/3a^n+1-5/6b^n)*3ab
n+1和n都是指数

答

=[(6/4a^n+1)-1/b^n-(3/3a^n+1)+5/2b^n]*ab
=[(18a^n+6-12a^n-3)/(4^an+1)*(3a^n+1)+3/2b^n]*ab
=[(6a^n+3)/(4a^n+1)*(3a^n+1)+3/2b^n]*ab

（3/4a^n+1-1/2b^n)*2ab-(2/3a^n+1-5/6b^n)*3abn+1和n都是指数