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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: 5x + 3x – 2x . 4x = ?? lẹ nha, :))

Toán Lớp 8: 5x + 3x – 2x . 4x = ??
lẹ nha, :))

Comments ( 2 )

  1. 5x + 3x – 2x . 4x
    = 5x + 3x – 8x²
    = 8x – 8x²
      no coppy 
    xin 5* , cảm ơn và ctlhn cho nhóm để có động lực ạ :))

  2. 5x+3x-2x.4x
    =x.5+x.3-2.x.4.x
    =x.(5+3)-x.x.(2.4)
     =x.8-x^2. 8
    =8x-8x^2
    =8x^2-8x.

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222-9+11+12:2*14+14 = ? ( )

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