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

Toán Lớp 8: 2x^2-4x+2/(x-1)^2 rút gọn phân thức

Toán Lớp 8: 2x^2-4x+2/(x-1)^2 rút gọn phân thức

Comments ( 2 )

  1. Giải đáp:
    \frac{2x^2-4x+2}{(x-1)^2}
    = \frac{2(x^2-2x+1)}{(x-1)^2}
    = \frac{2(x-1)^2}{(x-1)^2}
    = 2

  2. (2x^2-4x+2)/((x-1)^2)
    =(2(x^2-2x+1))/((x-1)^2)
    =(2(x-1)^2)/((x-1)^2)
    =(2)/1
    =2
     

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