Question

8^8+8^7+8^6

chứng tỏ chia hết cho 73

Answer 1

mik cần gấp lắm mng giúp mik nhaaa

Answer 2

\(=8^6\left(8^2+8+1\right)=8^6\cdot73⋮73\)

Answer 3

\(8^8+8^7+8^6=8^6.8^2+8^6.8+8^6=8^6\left(8^2+8+1\right)=8^6.73⋮73\)

Answer 4

`8^8+8^7+8^6 `

`= 8^2 . 8^6+ 8 . 8^6 + 1 . 8^6 `

`= (8^2 + 8 + 1). 8^6`

`= 73.8^6`

Vì `73` ⋮ `73`

nên `73.8^6` ⋮ `73`

Answer 5

=86(82+8+1)=86⋅73⋮73

 

Answer 6

\(8^8+8^7+8^6=8^6.8^2+8^6.8+8^6.1\)

\(=8^6\left(1+8+8^2\right)\)

\(=8^6\left(9+64\right)\)

\(=8^6.73\text{⋮}73\)