\(B=2015.20162016-2016.20152015\)

\(B=2015.2016.10001-2016.2015.10001\)

\(B=0\)

Ủng hộ mk nha ^_^

\(B=2016.20152015-2015.20162016\)

\(B=2016.2015.10001-2015.2016.10001\)

\(B=0\)

Ủng hộ mk nha ^_^

a = 2015 x 20162016 

A = 2015 x 10001 x 2016

B = 2016 x 20152015

B = 2016 x 10001 x 2015

=> A = B

a) (44 x 52 x 60) : (11 x 13 x 15) 

= 44 x 52 x 60 : 11 : 13 : 15

= (44 : 11) x (52 : 13) x (60 : 15)

= 4 x 4 x 4 

= 64

b) 2016 x 20152015 - 2015 x 20162016

= 2016 x (20150000 + 2015) - 2015 x (20160000 + 2016)

= 2016 x (2015 x 10000 + 2015) - 2015 x (2016 x 10000 + 2016)

= 2016 x [2015 x (10000 + 1)] - 2015 x [2016 x (10000 + 1)]

= 2016 x 2015 x 10001 - 2015 x 2016 x 10001

= 0

c) 46 x 37 + 46 x 63 + 54 x 267 - 54 x 167

= 46 x (37 + 63) + 54 x (267 - 167)

= 46 x 100 + 54 x 100

= 100 x (46 + 54)

= 100 x 100

= 10000 

( 20152015/20162016 + 20172017/20162016 ) . x - 1 = 2016

2.x-1=2016

2x=2017

x=2017:2

x=1008,5

=>2.x-1=2016

=>2x =2017

=>x=1008,5

\(\left(5\times6+11-41\right)\times\left(1+2+3+\cdot\cdot\cdot+100\right)\)

\(=\left(30+11-41\right)\times\left(1+2+\cdot\cdot\cdot+100\right)\)

\(=\left(41-41\right)\times\left(1+2+\cdot\cdot\cdot+100\right)\)

\(=0\times\left(1+2+\cdot\cdot\cdot+100\right)\)

\(=0\)

\(\left(2+4+\cdot\cdot\cdot+100\right)\times\left(11\times7-78+1\right)\)

\(=\left(2+4+\cdot\cdot\cdot+100\right)\times\left(77+1-78\right)\)

\(=\left(2+4+\cdot\cdot\cdot+100\right)\times0\)

\(=0\)

\(20152015\times2016-20162016\times2015\)

\(=10001\times2015\times2016-10001\times2006\times2005\)

\(=0\)

B=2016x20162015-(2016-1)x(20162015+1)+2017

B=2016x20162015-(2016x20162015+2016-20162015-1)+2017

B=2016x20162015-2016x20162015-2016+20162015+1+2017=20162015+2=20162017