Question

 (-57) x(67-34)-67x(34-57)

Giải rõ ràng ra nha

Answer 1

(-57) . (67-34) - 67 . (34-57)
= -57 . 67 - 34 . (-57) - 67 . 34 - 67 . 57
= -34.[(-57)+67]
= -34.10
= -340

Answer 2

 (-57) x(67-34)-67x(34-57)

=-57x33-67x(-23)

=-1881-(-1541)

=-1881+1541

=-340

 

Answer 3

Minh van chua hieu ro cau tra loi  dau tien

Answer 4

câu đầu tiên sai rồi

Answer 5

cau dau tien wrong roi

Answer 6

(-57) . (67 - 34) - 67 . (34 - 57)

= (-57). 67 - (-57) . 34 - 67 . 34 + 67 . 57

= 67 . (-57 + 57) -  (34 . (-57) + 34 . 67)

= 0 - 34 . ( -57 + 67)

= -34 . 10 = -340

Answer 7

(–57) . (67 – 34) – 67 . (34 –57)

= [(–57) . 67 – (–57 ) . 34] – (67 . 34 – 67 . 57)

= – (57 . 67) – [–(57 . 34)] – (67 . 34 – 67 . 57)

= – 57 . 67 + 57 . 34 – 67 . 34 + 67 . 57

= 67 . 57 – 57. 67 + 57 . 34 – 67 . 34

= 0 + 34 . (57 – 67)

= 34 . (–10) = –340