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

Toán Lớp 8: Thực hiện phép tính (x^4-27x):(x^2+3x+9)

Toán Lớp 8: Thực hiện phép tính (x^4-27x):(x^2+3x+9)

Comments ( 2 )

  1. Giải đáp:
     $(x^4-27x):(x²+3x+9)$
    $= [x.(x³-27)]:(x²+3x+9)$
    $= x.(x-3).(x²+3x+9):(x²+3x+9)$
    $= x²-3x$
     

  2. Giải đáp:
    (x^(4)-27x):(x^(2)+3x+9)
    =[x(x^(3)-27)]:(x^(2)+3x+9)
    =[x(x-3)(x^(2)+3x+9)]:(x^(2)+3x+9)
    =x(x-3)
    =x^(2)-3x

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

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