2024-12-19 19:56| 查看: 1
a³b⁶
(1)1×-9
(2)8.01×10-4
(3)4×10-2
(4)-5×10-5
12.填空
(1)2m2
(2)-x3
(3)2m
(4)Xn+1
(5)a2n-5
(6)Xn-3
13.9
14.a²b