a 2 mũ 2. 3 mũ 1 -(1 mũ 2022 + 2021 mũ 0) : 2 b 2020 + [38 - (9-3) mũ 2] - 2030 mũ 0

$#AS$

`a) 2^2 * 3^1 - (1^2022 + 2021^0) : 2`

`= 4 * 3 - (1 + 1) : 2`

`= 12 - 2 : 2`

`= 12 - 1`

`= 11`

`b) 2020 + [38 - (9 - 3)^2] - 2030^0`

`= 2020 + [38 - 6^2] - 1`

`= 2020 + [38 - 36] - 1`

`= 2020 + 2 - 1`

`= 2022 - 1`

`= 2021`