\(-136\cdot(64-95)-64\cdot(-95-136)\\=-136\cdot64+(-136)\cdot(-95)+(-64)\cdot(-95)+(-64)\cdot(-136)\\=-136\cdot64+136\cdot95+64\cdot95+64\cdot136\\=(-136\cdot64+64\cdot136)+(136\cdot95+64\cdot95)\\=0+95\cdot(136+64)\\=95\cdot200\\=19000\)

A= 2014*{128*68-64*136}+2015

A=2014*0+2015

Vậy A=2015

a, 45451: x = 151

x = 45451 : 151

x = 301

b, x  x 35 = 25 x 49

x x 35 = 1225

x = 1225 : 35

x = 35

a) \(56^2+44^2+2.56.44=56^2+2.56.44+44^2=\left(56+44\right)^2=100^2=10000\)

b) \(36^2+64^2+72.64=36^2+2.36.64+64^2=\left(36+64\right)^2=100^2=10000\)

c) \(136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000\)

a) $56^2+44^2+2.56.44=56^2+2.56.44+44^2=\left(56+44\right)^2=100^2=10000$562+442+2.56.44=562+2.56.44+442=(56+44)2=1002=10000

b) $36^2+64^2+72.64=36^2+2.36.64+64^2=\left(36+64\right)^2=100^2=10000$362+642+72.64=362+2.36.64+642=(36+64)2=1002=10000

c) $136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000$

 A = 2014 x (128 x 68 - 64 x 136) + 2015

A=2014x(8704-8704)+2015

A=2014x0+2015

A=0+2015

A=2015

=2014x(8704-8704)+2015

=2014x0+2015

=0+2015=2015

2015 đúng ko ạ

A = 2014 x ( 128 x 68 - 64 x 136 ) + 2015 

= 2014 x ( 128 x 68 - 64 x 2 x 136 : 2 ) + 2015 

= 2014 x ( 128 x 68 - 128 x 68 ) + 2015 

= 2014 x 0 + 2015 

= 0 + 2015 = 2015 

Đáp án là 2015

Ư(49)={1;7;49}

A = 2014 x ( 128 x 68 - 64 x 136 ) + 2015 

A = 2014 x 0 + 2015 

A = 0 + 2015 

A = 2015 

Chúc bạn học tốt ! 

= 2014 x (  8704 - 8704 ) + 2015

= 2014 x 0 + 2015

A = 0 + 2015 = 2015