(х-4)2=4х-11
х2 - 8х + 16 = 4х - 11
х2 - 8х + 16 - 4х +11 = 0
х2 - 12х + 27 = 0
Д = (-12)2 + 4 * 1 * 27 = 144 - 108 = 36
√Д = 6
х1 = 12 - 6 / 2 = 3
х2 = 12 + 6 / 2 = 9
(х-4)2=4х-11
х2 - 8х + 16 = 4х - 11
х2 - 8х + 16 - 4х +11 = 0
х2 - 12х + 27 = 0
Д = (-12)2 + 4 * 1 * 27 = 144 - 108 = 36
√Д = 6
х1 = 12 - 6 / 2 = 3
х2 = 12 + 6 / 2 = 9