2^n+2-2^n+1求数学大神写化简过程

2^n+2-2^n+1求数学大神写化简过程
2^n+2-2^n+1求数学大神写化简过程

2^n+2-2^n+1求数学大神写化简过程
2^n+2-2^n+1
=（2-1）2^n+1
=2^n+1

=2的n次方+2-2的n次方+1
=2+1
=3
请采纳

两个2∧n相减不是没了麽？

b

2^n+2-2^n+1
=2^n-2^n+2+1
=3

收起

3吧

答案是3