Можете решить х2 + 3х + 2 = 0 х2 – 2х – 3 = 0 х2 + 12х + 20 = 0 х2 + 5х – 6 = 0 х2 + 9х + 18 = 0 х2 – 4х – 5 = 0 2х2 + 3х + 6 = 0 х2 + 9х + 20 = 0 х2 – 11х + 24 = 0 х2 – 17х + 30 = 0 х2 – 15х + 50 = 0 х2 + 7х – 60 = 0 х2 – 6х + 6 = 0 4х2 + 4х + 1 = 0 х2 – х – 12 = 0 х2 – х – 20 = 0 10х2 + 30х + 20 = 0 20х2 – 22х + 6 = 0 4х2 – 12х – 5 = 0 3х2 + 13х + 14 = 0 х2 – 11х + 18 = 0
