8х²-12+4=0
D= b²-4ас = 144 - 4*4*8 = 144 - 128 = 16
х1 = -(-12)-√16 / 2*8 = 12-4/16= 8/16= 1/2
х2 = -12-√16/2*8 = -12-4/16= -16/16= -1
х1= 1/2
х2= -1
Объяснение:
Х1,2 = +-b - √D / 2a
8х²-12+4=0
D= b²-4ас = 144 - 4*4*8 = 144 - 128 = 16
х1 = -(-12)-√16 / 2*8 = 12-4/16= 8/16= 1/2
х2 = -12-√16/2*8 = -12-4/16= -16/16= -1
х1= 1/2
х2= -1
Объяснение:
Х1,2 = +-b - √D / 2a