Question

1.2.3...9-1.2.3...8-1.2.3...8^2
Giải thích giùm mình nha

 

Answer 1

   1.2.3...9 - 1.2.3...8 - 1.2.3...8²

= 1.2.3...8.(9 - 1) -  1.2.3...8²

=  1.2.3...8.8 - 1.2.3...8.8

= 0

Answer 2

 1.2.3...9 - 1.2.3...8 - 1.2.3...8²

= 1.2.3...8.(9 - 1) -  1.2.3...8²

=  1.2.3...8.8 - 1.2.3...8.8

= 0

Answer 3

\(1.2.3.....9-1.2.3.....8-1.2.3.....8^2\) 

\(=1.2.3.....8.\left(9-1\right)-1.2.3.....8.8\) 

\(=1.2.3.....8.8-1.2.3.....8.8\) 

\(=0\)

Answer 4

0

mình doán đại nhé nếu đúng thì tisk 

Answer 5

tỷ ấy bạn