$\textbf{A}$

$A=[261-(36-31)^3\cdot2]-9\cdot1001$

$=[261-5^3\cdot2]-9009$

$=[261-125\cdot2]-9009$

$=(261-250)-9009$

$=11-9009$

$=-8998.$

$\textbf{B}$

$B=\{315-[(60-41)^2-361]\cdot4217\}+2885$

$=\{315-(19^2-361)\cdot4217\}+2885$

$=\{315-(361-361)\cdot4217\}+2885$

$=315-0+2885$

$=3200.$

a, {[216 -(36-31).25.2]-9}.1001

=[(216-5.25.2)-9].1001

=[(216-100)-9].1001

=(116-9).1001

=107.1001

=107107

b, {315-[(60-41).19-361].4217}+2885

= [315-(19.19-361).4217]+2885

=[315-(361-361).4217]+2885

=(315-0.4217)+2885

=315+2885

=3200

****cho mình nhé

a, {[216 -(36-31).25.2]-9}.1001

=[(216-5.25.2)-9].1001

=[(216-100)-9].1001

=(116-9).1001

=107.1001

=107107

b, {315-[(60-41).19-361].4217}+2885

= [315-(19.19-361).4217]+2885

=[315-(361-361).4217]+2885

=(315-0.4217)+2885

=315+2885

=3200

$\textbf{a)}$

$\{[126-(36-31)^2\cdot2]-9\}\cdot1001$

$=\{126-5^2\cdot2-9\}\cdot1001$

$=(126-50-9)\cdot1001$

$=67\cdot1001$

$=67067.$

$\textbf{b)}$

$\{315-[(60-41)^2-361]\cdot4217\}+2885$

$=\{315-(19^2-361)\cdot4217\}+2885$

$=\{315-(361-361)\cdot4217\}+2885$

$=315+2885$

$=3200.$

$\textbf{Bài 1a}$

$\{[216-(36-31)^3\cdot2]-9\}\cdot1001$

$=\{216-5^3\cdot2-9\}\cdot1001$

$=(216-250-9)\cdot1001$

$=(-43)\cdot1001$

$=-43043.$

$\textbf{Bài 1b}$

$\{315-[(60-41)^2-361]\cdot4217\}+2885$

$=\{315-(19^2-361)\cdot4217\}+2885$

$=\{315-(361-361)\cdot4217\}+2885$

$=315+2885$

$=3200.$

\(\left\{315-\left[\left(60-41\right)^2-361\right]\cdot4217\right\}+2885\)    

\(=\left[315-\left(19^2-361\right)\cdot4217\right]+2885\)    

\(=\left[315-\left(361-361\right)\cdot4217\right]+2885\)   

\(=\left(315-0\cdot4217\right)+2885\)    

\(=\left(315-0\right)+2885\)   

\(=315+2885\)    

\(=3200\)

\(\left\{315-[\left(60-41\right)^2-361]\times4217\right\}+2885\)

\(=\left\{315-[19^2-361]\times4217\right\}+2885\)

\(=\left\{315-0\times4217\right\}+2885\)

\(=315+2885\)

\(=3200\)

*Nếu thấy khó nhìn mong bạn thông cảm!

$\textbf{a)}$

$\{[261-(36-3)\cdot3^2]-9\}\cdot1001$

$=\{261-33\cdot9-9\}\cdot1001$

$=(261-297-9)\cdot1001$

$=-45\cdot1001$

$=-45045.$

$\textbf{b)}$

$\{315-[(660-41)^2-361]\cdot4217\}+2885$

$=\{315-(619^2-19^2)\cdot4217\}+2885$

$=\{315-(619-19)(619+19)\cdot4217\}+2885$

$=\{315-600\cdot638\cdot4217\}+2885$

$=3200-1613691600$

$=-1613688400.$