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ex22 ex22
  • 18-01-2016
  • Mathematics
Answered

Solve x2 + 4x + 8 = 0.

Verified Answer :

Panoyin
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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