Nr, Y. D., Angraini, L. M., Wahyuni, A., & Wahyuni, P. (2026). Students’ Mathematical Problem-Solving Ability in Solving Quadratic Function Problems. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, 6(2), 486–497. https://doi.org/10.51574/kognitif.v6i2.3450