单选题In the expression an, n is an even power. Which of the following expressions does not have even power?A an +lB a2nC an+2D a3nE an+4
题目
单选题
In the expression an, n is an even power. Which of the following expressions does not have even power?
A
an +l
B
a2n
C
an+2
D
a3n
E
an+4