bbc
bbc
26-02-2015
Mathematics
contestada
complete the perfect square v^2-2v=3
Respuesta :
Panoyin
Panoyin
28-02-2015
v² - 2v = 3
v² - 2v - 3 = 0
v =
-(-2) +/- √((-2²) - 4(1)(-3))
2(1)
v =
2 +/- √(4 + 12)
2
v =
2 +/- √16
2
v =
2 +/- 4
2
v =
2 + 4
v =
2 - 4
2 2
v =
6
v =
-2
2 2
v = 3 v = -1
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