Question

1.2.3. ..... .9-1.2.3. ...... .8-1.2.3. .... .7.8^2

mong mọi người sẽ giúp

Answer 1

1.2.3....9 - 1.2.3.....8 - 1.2.3...7.8²

= 1.2.3.4.5.6.7.8( 9 - 1 - 8)

= 1.2.3.4.5.6.7.8.0

= 0

Answer 2

1.2.3....9 - 1.2.3.....8 - 1.2.3...7.82

= 1.2.3.4.5.6.7.8( 9 - 1 - 8)

= 1.2.3.4.5.6.7.8.0

= 0