Question

. Chứng minh rằng :

          a) 35⁶  - 35⁵ chia hết cho 34          b) 43⁴ + 43⁵ chia hết cho 44.

Answer 1

`a)35^6-35^5`

`=35^5(35-1)`

`=34.35^5 vdots 34`

`b)43^4+43^5`

`=43^4(43+45)`

`=88.43^4`

`=2.44.43^4 vdots 44`

Answer 2

$a){}^{}-{}^{}$$={}^{}(35-1)$$={}^{}⋮34$

$b){}^{}+{}^{}$$={}^{}(43+45)$$={}^{}$$=2.44{}^{}⋮44$

Answer 3