Bronnenvermelding

Mathematics header: https://study.com/cimages/course-image/nystce-mathematics-practice-study-guide_195602_large.jpg

5 Minutes later: https://www.youtube.com/watch?v=wiHYx9NX4DM

Herleiden: https://www.dr-aart.nl/Herleiden-haakjes-wegwerken.html

Oplossen:https://www.mathplanet.com/education/algebra-1/quadratic-equations/use-graphing-to-solve-quadratic-equations

Merkwaardig product:https://www.mathplanet.com/education/algebra-1/quadratic-equations/use-graphing-to-solve-quadratic-equations "Treeboy Waits" by Mark Brown