01/11/2025
ដោះស្រាយសមីការដឺក្រេទី២មានមួយអញ្ញាត្តិតាម ឌីគ្រីសមីណង់( discriminant) និងបំណកស្រាយតាមក្រាប។
Provide Mathematics exercises and lessons.
Phnom Penh
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