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

Toán Lớp 8: đa thức -8x^3+12x^2y-6xy^2+y^2 thu gọn

Toán Lớp 8: đa thức -8x^3+12x^2y-6xy^2+y^2 thu gọn

Comments ( 1 )

  1. $\text{-8x³ + 12x²y – 6xy² + y²}$
    $\text{= – [ ( 2x )³ – 3. 4x². y + 3. 2x. y² – y³ ] }$
    $\text{= – ( 2x – y )³}$

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