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29-04-2015
Mathematics

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[tex] x^{2} +16x=-28[/tex]

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Panoyin Panoyin

29-04-2015

      x² + 16x = -28
x² + 16x + 28 = 0
x = -(16) +/- √((16)² - 4(1)(28))
   2(1)
x = -16 +/- √(256 - 112)
   2
x = -16 +/- √(144)
2
x = -16 +/- 12
      2
x = -8 + 6
x = -8 + 6 x = -8 - 6
x = -2 x = -14

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