32 . 75 + 68 . 84 + 65 . 32 + 68 . 56
= 32 . ( 75 + 65 ) + 68 . ( 84 + 56 )
= 32 . 140 + 68 . 140
= 140 . ( 32 + 68 )
= 140 . 100
= 14000
32 x 75 + 68 x 84 + 65 x 32 + 68 x 56
= ( 32 x 75 ) + ( 65 x 32 ) + ( 68 x 84 ) + ( 68 x 56 )
= 32 x ( 75 + 65 ) + 68 x ( 84 +56 )
= 32 x 140 + 68 x 140
= 140 x ( 32 + 68 )
= 140 x 100
= 14000
[32.(75+65)]+[68.(56+84)]
=32.140+68.140
=140.(68+32)
=140.100
=14000
32 x 75 + 68 x 84 + 65 x 32 + 68 x 56
= 32 x [ 75 + 65 ] + 68 x [ 84 + 56 ]
= 32 x 140 + 68 x 140
= [ 32 + 68 ] x 140
= 98 x 140
= 13720
Giúo tui bài này đi 68 × 84 + 15 68 +68
