Although the official teacher's guide is restricted, you are not without help. The Quebec education ecosystem offers excellent free resources:
Many dedicated teachers share resources directly with their students, especially for exam review or during periods of remote learning. These materials often include answer keys. sommet math secondaire 3 corrige pdf link
The exercises and solutions provided in the PDF cover a range of mathematical concepts, including: Although the official teacher's guide is restricted, you
Let’s be real: some students want the corrigé to copy answers 10 minutes before class. That’s a disaster for learning. sommet math secondaire 3 corrige pdf link