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Oscar Lai

  • Factoring Quadratic Polynomial

    Activity

    Oscar Lai

  • HKDSE 3D Questions

    Book

    Oscar Lai

  • HKDSE 2016 Paper1 Q19

    Activity

    Oscar Lai

  • HKDSE 2015 Paper1 Q19

    Activity

    Oscar Lai

  • HKDSE 2014 Paper1 Q17

    Activity

    Oscar Lai

  • HKDSE 2013 Paper1 Q18

    Activity

    Oscar Lai

  • No Title

    Activity

    Oscar Lai

  • HKDSE 2012 Paper 1 Q18

    Activity

    Oscar Lai

  • Factorization

    Activity

    Oscar Lai

  • Proof of Pythagorean theorem

    Activity

    Oscar Lai

  • Exponential function and Logarithmic Function

    Activity

    Oscar Lai

  • Centres of a Triangle

    Activity

    Oscar Lai