$\textbf{a)}$

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

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

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

$=67\cdot1001$

$=67067.$

$\textbf{b)}$

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

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

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

$=315+2885$

$=3200.$

a.\(\left[545-\left(45+4.25\right)\right]:50-2000:250+2^{15}:2^{13}\)

=\(\left[545-145\right]:50-8+2^2\)

=\(400:50-8+4\)

=8-8+4

=4

b.\(\left[504-\left(25.8+70\right)\right]:9-15+9^0\)

=\(\left[504-270\right]:9-15+1\)

=234:9-14

=26-14

=12

$\textbf{Bài 1a}$

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

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

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

$=(-43)\cdot1001$

$=-43043.$

$\textbf{Bài 1b}$

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

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

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

$=315+2885$

$=3200.$

xin lỗi vì mình không làm dc bài a

b, B = 1 + 2 + 2^2 + 2^3 +.....+ 2^2013

2B = 2.(1 + 2 + 2^2 + 2^3 +.....+ 2^2013)

2B = 2 + 2^2 + 2^3 + 2^4 +.....+ 2^2014

2B - B = 2^2014 - 1

B = 2^2014 - 1

A={ [ 261-(36-31)^3*2]-9}*1001 

={[261-5³*2]-9}*2001

={[261-125*2]-9}*2001

={[261-250]-9}*2001

= 2*2001

= 4002

A={[261-(36-31)³.2]-9}.1001

A={[261-5³.2]-9}.1001

A={[261-125.2]-9}.1001

A={[261-250]-9}.1001

A={11-9}.1001

A=2.1001

A=2002

\(\left\{\left[261-\left(36-31\right)^3.2\right]-9\right\}.1001.2016^0\)

\(=\left\{\left[261-5^3.2\right]-9\right\}.1001.2016^0\)

\(=\left\{\left[261-125.2\right]-9\right\}.1001.2016^0\)

\(=\left\{\left[261-250\right]-9\right\}.1001.2016^0\)

\(=\left\{11-9\right\}.1001.2016^0\)

\(=2.1001.2016^0\)

\(=2002.2016^0\)

\(=2002.1\)

\(=2002\)

\(\left\{\left[261-\left(36-31\right)^3.2\right]-9\right\}.1001.2016^0\)

\(=\left\{\left[261-5^3.2\right]-9\right\}.1001\)

\(=\left[\left(136.2\right)-9\right].1001\)

\(=\left(272-9\right).1001\)

\(=263.1001\)

\(=263263\)

$\textbf{a)}$

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

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

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

$=-45\cdot1001$

$=-45045.$

$\textbf{b)}$

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

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

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

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

$=3200-1613691600$

$=-1613688400.$