2 x 3 x 12 + 4 x 6 x 42 + 8 x 27 x 3

= (2 x 3 x 12) + (4 x 6 x 42) + (8 x 27 x 3)

= (6 x 12) + (24 x 42) + (216 x 3)

= 72 x 1008 x 648

= 47029248

= 8898

Ủng hộ tíck mik nha

Please đó ~~~~~

Trả lời:

= 8898

Chúc hok tốt

=8898 NHA

kb nha

CHÚC BẠN HỌC TỐT!

2*31*12 + 4*6*42 + 8*27*3

= 2.12.31 + 4.6.42 + 8.3.27

= 24.31 + 24.42 + 24.27

= 24.(31 + 42 + 27)

= 24.100

= 2400

2*31*12+4*6*42+8*27*3

=24*31+24*42+24*27

=24*[31+42+27]

=24*100

=2400

2 x 31 x 12 + 4 x 6 x 42 + 8 x 3 x 27

= 24 x 31 + 24 x 42 + 24 x 27

= 24 x ( 31 + 42 + 27 ) 

= 24 x 100

= 2400 

a)=2100:21-42:21                                                  b)=(2.12).31+(4.6).42+(8.3).27

   =100-2                                                                   =24.31+24.42+24.27     

   =98.                                                                       =24.(31+42+27)

                                                                                 =24.100

                                                                                 =2400

k cho mk nha mk đang -12

\(=24\cdot31+24\cdot42+24\cdot27=24\left(31+42+27\right)=24\cdot100=2400\)

2.31.12+4.6.42+8.27.3=24.31+24.42+24.27=24.(31+42+27)=24.100=2400

   2 x 3 x 12 + 4 x 6 x 42 + 8 x 27 x 3

= 2 x 12 x 3 + 4 x 6 x 42 + 8 x 3 x 27

= 24 x 3 + 24 x 42 + 24 x 27

= 24 x ( 3 + 42 + 27 )

= 24 x 72

= 1728

2x3x12+4x6x42+8x27x3

=2x3x4x3+4x2x3x42+4x2x27x3

=2x3x4x(3+42+27)

=24x72

=1728

  2 x 3 x 12 + 4 x 6 x 42 + 8 x 27 x 3

= 2 x 3 x 12 + 2 x 2 x 6 x 42 + 2 x 4 x 27 x 3

= 2 x 36 + 2 x 504 + 2 x 324

= 2 x ( 36 + 504 + 324 )

= 2 x 864 = 1728 .

2*31*12+4*6*42+8*27*3

=(2*12)*31+(6*4)*42+(8*3)*27

=24*31+24*42+24*27

=24*(31+42+27)

=24*100

=2400

tíck mk nha

2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3

= (2 x 12) x 31 + (6 x 4) x 42 + (8 x 3) x 27

= 24 x 31 + 24 x 42 + 24 x 27

= 24 x (31 + 42 + 27)

= 24 x 100

= 2400

 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3

=24.31+24.42+24.27

=24.(31+42+27)

=24.100

=2400

**** nhé