a ) − 1 2 ≤ x < 2 3 = > x = 0. b ) − 1 < x ≤ 1 = > x ∈ {0;1}

a, 12 x 35 +35 x 182- 35 x 94

= 35 x ( 12 + 182 - 94 )

= 35 x 100

= 3500

b, 17 x 93 + 116 x 83 + 17 x 23

= 17 x ( 93 +23  ) + 116 x 83

= 17 x 116 + 116 x 83

= 116 x ( 83+17)

= 116 x 100

= 11600

* 4 x 1930 x 3 + 6 x 70 x 2

   = (4 x 3 ) x 1930 +  (6 x 2 ) x 70

   = 12 x 1930 + 12 x 70

   = 12 x (1930 + 70 )

   = 12 x 2000

   = 24000

* 8 x 427 x 3 + 6 x 573 x 4

   = ( 8 x 3 ) x 427 + (6 x 4 ) x 573

   = 24  x 427 + 24 x 573

   = 24 x ( 427 + 573 )

   = 24 x 1000

   = 24000

* 117x (35 + 46 ) - 17 x (35 + 46 )

   = ( 117 - 17 ) x ( 35 + 46 )

   = 100 x 81

   = 8100

câu 1 :24000

câu 2:23 502 168

câu 3: 70 337

ai xoạc nào

=35.(12+182-94)

=35.100

=3500

=35x(12+182-94)=35x100=3500

=35.(12+182-49)

=35.145

=5075

12.35 + 35.182 -35.49

=35.(12+182-49)

=35.145

=5075

\(12\cdot85+35\cdot182-35\cdot94\)

\(=6\cdot2\cdot5\cdot17+7\cdot5\cdot2\cdot91-7\cdot5\cdot2\cdot47\)

\(=10\cdot\left(6\cdot17+7\cdot91-7\cdot47\right)\)

\(=10\cdot410=4100\)

= 12*85+ 35*(182-94)

= 12*85+ 35*88

=1020+3080

=4100

 study well

các bạn giúp mình lên 100sp nhé

   12 x 85 + 35 x 182 - 35 x 94

= 12 x (35 + 50) + 35 x 182 - 35 x 94

= 12 x 35 + 12 x 50 + 35 x 182 - 35 x 94

= (12 x 35 + 35 x 182 - 35 x 94) + 12 x 50

= 35 x ( 12 + 182 - 94) + 600

= 35 x 100 + 6x 100

= 100x (35 + 6)

= 100 x 41

= 4100