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

Toán Lớp 8: (4x ³-2x+5)2x Mn giúp e vs em cảm ơn

Toán Lớp 8: (4x ³-2x+5)2x
Mn giúp e vs em cảm ơn

Comments ( 2 )

  1. (4x ³-2x+5)2x
    =4x³.2x-2x.2x+5.2x
    =8x^4-4x²+10x

  2. (4x^2-2x+5)2x
    =2x(4x^3-2x+5)
    =2x.4x^3+2x.(-2x)+2x.5
    =8x^4-4x^2+10x.

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

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