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

Toán Lớp 8: (x^3+3x^2-8x-12):(x+2) Giúp em với ạ

Toán Lớp 8: (x^3+3x^2-8x-12):(x+2)
Giúp em với ạ

Comments ( 1 )

  1. (x^3+3x^2-8x-12):(x+2)
    x^3+3x^2-8x-12
    =( x+ 2) . (x^2 + x -10)
    => (x^3+3x-8x-20)=(x+2)
    =>x^2 + x -10

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