Question

 tính nhanh : 

48 . (-64) + 24. 66 - 48.( 83 - 64)

Answer 1

=-2400

Answer 2

   48 . (-64) + 24. 66 - 48.( 83 - 64)

= 48 . ( - 64 ) + 24 . 66 - 48 . 83 - 48 . 64

= 48 . ( - 64 - 83 - 64 ) +24 . 66

= 48 . ( - 211 ) + 24 . 66

= - 10128 + 1584

= - 8544

Answer 3

48.(-64)+24.66-48.(83-64)

=48.(-64)-48.19+24.66

=48.[(-64)-19]+24.66

=48.(-83)+24.66

=24.2.(-83)+24.66

=24.[(-166)+66]=24.(-100)=-2400

Chúc bạn học tốt ^^!!!

Answer 4

cho mình hỏi cái này:

4, 28, 70, 130, 208

tìm số hạng thứ n

Answer 5

  48 . (-64) + 24. 66 - 48.( 83 - 64)

=48.(-64)+24.66-48.19

=48.(-64-19)+24.66

=48.(-83)+24.66

=24.2(-83)+24.66

=24.[2.(-83)]+24.66

=24.(-166)+24.66

=24.(-166+66)

=24.(-100)

=-2400

Answer 6

\(48.\left(-64\right)+24.66-48.\left(83-64\right)\)

\(=48.\left(-64\right)+24.2.33-48.\left(83-64\right)\)

\(=48.48.33-48.\left[\left(-64\right)+\left(83-64\right)\right]\)

\(=48.48.33-48.\left(-64\right)+83+64\)

\(=48.\left(33-83\right)+\left(-64+64\right)\)

\(=48.\left(-50\right)+0\)

\(=-2400\)