klmc2468
klmc2468
29-04-2015
Mathematics
contestada
[tex] x^{2} +16x=-28[/tex]
Respuesta :
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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