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

Toán Lớp 8: Rút gọn biểu thức 6X×(3x+7)-2x.(9x-5)

Toán Lớp 8: Rút gọn biểu thức
6X×(3x+7)-2x.(9x-5)

Comments ( 1 )

  1. 6x(3x+7)-2x(9x-5)
    =18x^2+42x-18x^2+10x
    =(18x^2-18x^2)+(42x+10x)
    =0+52x
    =52x
    $\text{@ThanhTruc2008}$

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

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