2. Tentang Persamaan Kuadratik (Quadratic Equations)

 Pembuktian Formula Kuadratik (prove the quadratic formula):

http://id.mind.net/~zona/mmts/miscellaneousMath/quadraticFormula/quadraticFormula.html

Aplikasi Formula Kuadratik (Quadratic Fomula) :

http://id.mind.net/~zona/mmts/miscellaneousMath/quadraticRealSolver/quadraticRealSolver.html