Bài 2: (1,0điểm) (VD) Thực hiện phép tính: a) 12.53 + 53. 172 – 53. 84 b) $6^{5}$ : $6^{3}$ + 2.$2^{2}$ - $2022^{0}$

Bài `2:`

`a)` $12\cdot 53+53\cdot 172-53\cdot 84$

$=53\cdot (12+172-84)$

$=53\cdot 184-84)$

$=53\cdot 100$

$=5300$

`b)` `6^5 : 6^3 + 2.2^2 - 2022^0 `

`= 6^(5-3) + 2 ^1. 2^2 - 1`

`= 6^2 +2^(1+2) - 1 `

`= 36 +2^3-1 `

`= 36 + 8-1 `

`= 43 `

`------------`

`@` Áp dụng:

`a xx b + a xx c=axx(b+c)`

`a^0=1`

`a^1=a`