0. Some mental calculations, like past friday:
https://www.geogebra.org/m/umcPNQbw#material/maquwuvn
- I’ve made this applets to help you with your first attempts, solve 5 in your notebook and check the answers in the app:
2. Practice, practice, practice, with JC:
https://www.geogebra.org/m/AsMKtWd4#material/cSNQG8tQ
3. You can use the last ten minutes of this class to improve your short history of the solution of the second degree equation.
A trick to memorize the formula:
https://www.youtube.com/shorts/vcXl25pv4fI
4. This is for next class:
