232 - 582 - ( 232 - 81) 

= 232 - 582 - 232 + 81

= ( 232 - 232 ) - ( 582 - 81)

= 0 -  501

= - 501

= 232 - 232 - (582 - 81) 

=0 - 501 

= (-501)

232 - (230 + 232 - 350)

=232 - (-230) - 232 + 350

=462 - 232 + 350

=230 + 350

=580

=232-230-232+350

=232-(230+350)

=232-580

=-348

=)

hỏi cái gì zậy

Hết hạn:2/3/2022

Sân si tí...

Ta có: \(29\cdot\left(232+68\right)+71\cdot\left(232+29\right)\)

\(=29\cdot232+29\cdot68+71\cdot232+29\cdot71\)

\(=\left(29\cdot232+71\cdot232\right)+\left(29\cdot68+29\cdot71\right)\)

\(=232\cdot100+29\cdot139\)

\(=23200+4031\)

\(=27231\)

232 x 24 = 5 568

198 + 232 - 98 -  32 = (232 - 32) + (198 - 98) = 300

\(332-\left(681+232-431\right)=332-\left(250+232\right)=332-482=-150\)

=332-681-232+431

=(332-232)+(681-431)

=100+250

=350

\(\Delta m=\left[Zm_p+\left(A-Z\right)m_n\right]-m=\left[90\cdot1,0073+\left(232-90\right)\cdot1,0087\right]-232,038\)

\(\Rightarrow\Delta m=1,8544u\)

Chọn A.

3 2 2 − − 5 2 1 + − 2 3 2 = 81 − 25 + 64 = 120

\(A=248-242+240-234+232-226+...+216-210\)

\(=4+4+4+...4\)

Số số 4 là \(\left(248-216\right):8+1=5\)

\(\Rightarrow A=5.4=20\)

Bằng 20 bạn nhé