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

Toán Lớp 8: $Làm$ $tính$ $chia$ $(13x+x^{2}-5)$ $:$ $(2x+5)$

Toán Lớp 8: $Làm$ $tính$ $chia$
$(13x+x^{2}-5)$ $:$ $(2x+5)$

Comments ( 1 )

  1. #WAB
    Ta sắp xếp lại thứ tự:
    (13x+x^2-5) : (2x+5)
    = (x^2+13x-5) : (2x+5)
    $\begin{array}{c|c} 6x^2+13x-5&2x+5 \\ -6x^2+15x\;\;\;\;\;\;\;\;\; &3x-1\\ \quad \;\;-2x-5\\ \quad \;\; \;\;\;2x+5\\ \quad\quad\quad\quad \quad0 \end{array}$

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