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

Toán Lớp 8: 2×2+ 6x====-…

Toán Lớp 8: 2×2+ 6x=…………………………………….

Comments ( 2 )

  1. 2x^2+6x
    =2x.x+2x.3
    =2x.(x+3)
    -> Đặt nhân tử chung: 2x
     

  2. 2x^2+6x
    =2.x.x+2.3.x
    =2x(x+3)
    * Đặt nhân tử chung 
     

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

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