Question

-2-3-4-5-6-7-8-9-10=?

 

Answer 1

- 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10

= - ( 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10)

= - [(10 + 2) + ( 9 + 3 ) + ( 8 + 4 ) + ( 7 + 5) + 6]

= - [12 + 12 + 12 + 12 + 6 ]

= - [ 48 + 6 ]

= - 54

Answer 2

-2-3-4-5-6-7-8-9-10 =-54

Answer 3

-2-3-4-5-6-7-8-9-10 thì sẽ bằng -54

Answer 4

-2-3-4-5-6-7-8-9-10=-(2+3+4+5+6+7+8+9+10)=-\(\frac{10\left(10+1\right)}{2}-1=-\left(5.11-1\right)\)=-54

Answer 5

thanks ha!