September 2018 1 266 Report
1. tentukan jumlah dari -a² + 5ab dan 8a² - 7ab
2. kurangkan 4a² + 7c - 7 dari a² + 3c + 2
3. sederhanakan bentuk berikut :
3a (2b - 7) - 2b (a - 8b)

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