Разбор ОГЭ-2020. Математика, Лысенко Ф.Ф. Вариант 23, №1-5, 16-20

15 вариант: https://www.youtube.com/watch?v=t2ghwX_rPOo https://www.youtube.com/watch?v=dzqzW28a0r8&t=39s 18 вариант: https://www.youtube.com/watch?v=BvjQ3Q0I0KU&t=1s https://www.youtube.com/watch?v=UpEuoLGCUw4&t=10s 20 вариант: https://www.youtube.com/watch?v=yGudOh2_XY0&t=6s https://www.youtube.com/watch?v=FJFIzqL8Etc&t=6s 21 вариант: https://www.youtube.com/watch?v=-TeEerFr0-E&t=28s https://www.youtube.com/watch?v=A8uiRigjYlg&t=23s 23 вариант: https://www.youtube.com/watch?v=Fsq0zO49aYw https://www.youtube.com/watch?v=b-IoFopUdLE&t=1s 26 вариант: https://www.youtube.com/watch?v=y8YXGunTuWk&t=1s https://www.youtube.com/watch?v=uh5CdOCDeXU 28 вариант: https://www.youtube.com/watch?v=PZpYPatB0pk https://www.youtube.com/watch?v=kAnIDC5ODV0 29 вариант: https://www.youtube.com/watch?v=lcPreTxQy_Q https://www.youtube.com/watch?v=kKMxmQ10344&t=2s 31 вариант: https://www.youtube.com/watch?v=ArX3rNTb5Oc&t=3s https://www.youtube.com/watch?v=eTeNihxZdKU&t=8s 33 вариант: https://youtu.be/AsZTXcdnYLY https://www.youtube.com/watch?v=xlSsGzzc97U 35 вариант: https://www.youtube.com/watch?v=q1W0-V2VIbk&t=3s https://www.youtube.com/watch?v=onapYURQhJc&t=15s 37 вариант: https://www.youtube.com/watch?v=5BLewE5lYDI&t=14s https://www.youtube.com/watch?v=AqTDeIyqeRQ 39 вариант: https://www.youtube.com/watch?v=sE3SLP9FYfM