Mary Jean P. Villanueva, Mary Grace P. Tinambacan, Charlito O. Lopez, and Cris S. Saranza. “STUDENTS’ PERFORMANCE IN FACTORING QUADRATIC TRINOMIALS THROUGH THE X–BOX METHOD”. European Journal of Humanities and Educational Advancements, vol. 3, no. 6, June 2022, pp. 88-90, https://scholarzest.com/index.php/ejhea/article/view/2397.