\(12345^{678}-12345^{67}\)

\(=12345^{67}\left(12345^{611}-1\right)\)

\(=12345^{67}\cdot\left(12345-1\right)\left(12345^{610}+12345^{609}+\cdots+1\right)\)

\(=12345^{67}\cdot12344\cdot\left(12345^{610}+12345^{609}+\cdots+1\right)\) ⋮12344

hey bạn k đi chớ

=4945931

=5035931

nha bn

hok tốt

1234567-1234567=0

tk mk nhé

Bảo Bình

Bằng 0 bạn ạ

1234567+1234567=1234567x2=2469134

1234567+1234567=2469134

1234567 + 1234567 = 2469134

123 + 456 + 789

= 579 + 789

= 1368

34354 + 6774 = 41128

ai k mk mk k lai

Ta có: (12*4)+(123*4)+............+(1234567*4)

Có 6 số * với 4

Vậy cách giải là :

(12+123+1234+12345+123456+1234567)*4=5486948

=4.12+4.123+4.1234+4.12345+4.123456+4.1234567=4(12+123+1234+12345+123456+1234567)=4.1371737

=5485948

1234567+1234567=1345689+12345

123456789+123456789=246913578

\(1234567+6789123=8023690\)

Tl :

Đáp án : 

1234567 + 6789123 = 

HT

Ta có: \(\frac{1234567}{1234569}=1-\frac{2}{1234569};\frac{1234565}{1234567}=1-\frac{2}{1234567}\)

Mà: \(\frac{2}{1234569}< \frac{2}{1234567}\Rightarrow1-\frac{2}{1234569}>1-\frac{2}{1234567}\Rightarrow\frac{1234567}{1234569}>\frac{1234565}{1234567}\)