Home > he phuong trinh bac 1 va 2 co ban > He phuong trinh bac 1 và bac 2 co ban (lop 10)

He phuong trinh bac 1 và bac 2 co ban (lop 10)


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  1. Anonymous
    December 28, 2010 at 9:08 am | #1

    Kon mev may

  2. Anonymous
    December 28, 2010 at 11:01 am | #2

    Con là ai, khong de lai thong tin sao thay biet duoc…
    $y=f(x)=\frac{x}{S}$

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