B=C*[13*37*(5*3-15)]=0

\(A=\dfrac{2^{10}\cdot78}{2^8\cdot26\cdot4}=\dfrac{78}{26}=3\)

\(A=\left(1+2+3+...+2023\right)\left(1^2+2^2+...+2023^2\right)\left(65\cdot111-13\cdot15\cdot37\right)\)

\(=\left(1+2+3+...+2023\right)\cdot\left(1^2+2^2+...+2023^2\right)\cdot\left(13\cdot5\cdot3\cdot37-13\cdot5\cdot3\cdot37\right)\)

=0

Ta có : (1+2+3+.....+100).(1²+ 2² +.....+10² ).(65.111 - 13.15.37)

         =A .B.(65.111-13.5.3.37)

         =A.B.(65.111-65.111)

         =A.B.0

         =0

\(19.64+76.34\)

\(=19.64+19.4.34\)

\(=19.64+19.136\)

\(=19.\left(64+136\right)\)

\(=19.200\)

\(=3800\)

\(35.12+65.13\)

\(=5.7.12+5.13.13\)

\(=5.84+5.169\)

\(=5.\left(84+169\right)\)

\(=5.253\)

\(=1265\)

\(19991999.1998-19981998.1999\)

\(=1999.10101.1998-1998.10101.1999\)

\(=0\)

\(\left(2+4+6+......+100\right).\left(36.333-108.111\right)\)

\(=\left(2+4+6+........+100\right).\left(36.3.111-108.111\right)\)

\(=\left(2+4+6+........+100\right).\left(108.111-108.111\right)\)

\(=\left(2+4+6+.......+100\right).0\)

\(=0\)

19x64+76x34

=19x64+19x4x34

=19x(64+136)

=19x200=3800

35x12+65x13

=5x7x12+5x13x13

=5x(7x12+13x13)

=5x253=1265

19991999x1998-19981998x1999

=1999x10001x1999-1998x10001x1999

=0

( 2+4+6+... +100) x ( 36x 333 -108 x111)

=(2+4+6+...+100)x(36x111x3-36x3x111)

=(..................tự điền, như trên thôi)x0=0

Ta có : \(65\cdot111-13\cdot15\cdot37\)

         \(=65\cdot111-13\cdot5\cdot3\cdot37\)

           \(=65\cdot111-65\cdot111\)

        \(=0\)

\(\Rightarrow\left(1+2+...+100\right)\left(65\cdot111-13\cdot15\cdot37\right)\)\(=0\)

(1+2+3+.....+100).(1²+2²+3²+.....+10²).(65.111-13.15.37)

=(1+2+3+.....+100).(1²+2²+3²+.....+10²)(65.111-13.555)

=(1+2+3+.....+100).(1²+2²+3²+.....+10²)(65.111-13.5.111)

=(1+2+3+.....+100).(1²+2²+3²+.....+10²)[111(65-65)]

=(1+2+3+.....+100).(1²+2²+3²+.....+10²)(100.0)

=(1+2+3+.....+100).(1²+2²+3²+.....+10²)0

=0

Mk lười viết lắm, nhưng mà mk tính r, đáp án là 0, mk làm giống Emily đó, bn làm như vậy là đúng thôi

mydream ngu thì có

vế c ,dấu gạch ngang là biểu thị phân số

giúp mình với nào

mik chỉ bit câu b) , c) thôi !!!

b) 20162016.2015 - 20152015.2016

= 2016 . 10001 . 2015 - 2015 . 10001 . 2016

=2016.2015 - 2015.2016

= 0

c) 1