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

Toán Lớp 12: Rút gọn biểu thức : A = ( 3x – 2 ) ( 2x – 1 ) – x ( 6x – 4 )

Toán Lớp 12: Rút gọn biểu thức : A = ( 3x – 2 ) ( 2x – 1 ) – x ( 6x – 4 )

Comments ( 2 )

  1. ~ Bạn tham khảo ~
    A = (3x-2)(2x-1) – x(6x-4)
    = 6x^2 -3x – 4x + 2 – 6x^2 + 4x
    = -3x+2

  2. A=(3x-2)(2x-1)-x(6x-4)
    =6x^2-3x-4x+2-6x^2+4x
    =(6x^2-6x^2)-3x+(-4x+4x)+2
    =-3x+2.

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

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