Abdiyeva, Shoira, and Riskeldi Turgunbaev. “THEOREMS ON THE NUMBER OF ROOTS OF A CUBIC EQUATION AND THEIR LOCATION AS A MEANS OF DEVELOPING STUDENTS’ VISUAL THINKING”. Physical and Mathematical Education, vol. 38, no. 4, Sept. 2023, pp. 7-13, https://doi.org/10.31110/2413-1571-2023-038-4-001.