Nazwa Mutia Syafitri, Helina Qatrunnada Nasution, Khalida Rahmah and Dian Armanto (2026) “A Literature Review of Students’ Difficulties in Quadratic Equations and Problem-Solving Learning Using LKPD : Penelitian”, Jurnal Pengabdian Masyarakat dan Riset Pendidikan, 4(4). doi: 10.31004/jerkin.v4i4.5901.