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

Toán Lớp 8: 3x²(2x³-x+5) Mng giúp em với ạ !!!

Toán Lớp 8: 3x²(2x³-x+5)
Mng giúp em với ạ !!!

Comments ( 2 )

  1. 3x²(2x³-x+5)
    =3x².2x³+3x².(-x)+3x².5
    =6x^5-3x³+15x²
     

  2. 3x². (2x³ – x + 5)
    =3x². 2x³ – 3x².x +3x².6
    = 6x ^6 − 3 x^ 3 + 15 x ^2
    Xin hay nhất
     

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