ex22
ex22
18-01-2016
Mathematics
contestada
Solve x2 + 4x + 8 = 0.
Respuesta :
Panoyin
Panoyin
18-01-2016
x² + 4x + 8 = 0
x = -(4) ± √((4)² - 4(1)(8))
2(1)
x = -4 ± √(16 - 32)
2
x = -4 ± √(-16)
2
x = -2 ± 4i
2
x = -1 ± 2i
x= -1 + 2i or x = -1 - 2i
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