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

Toán Lớp 8: (x^3-3x^2+3x-1)(2y^2+4y+2):(x-1)(y+1)^2 thuc hien phep chia

Toán Lớp 8: (x^3-3x^2+3x-1)(2y^2+4y+2):(x-1)(y+1)^2
thuc hien phep chia

Comments ( 1 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    (x³-3x²+3x-1)(2y²+4y+2):(x-1)(y+1)²
    =2(x-1)³(y+1)²:(x-1)(y+1)²
    =2(x-1)²=2(x²-2x+1)=2x²-4x+2

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