math56
math56
17-03-2015
Mathematics
contestada
xsquaredminus 4xplus3=0
Respuesta :
Panoyin
Panoyin
17-03-2015
x² - 4x + 3 = 0
x² + (-4x) + 3 = 0
x =
-(-4) +/- √((-4)² - 4(1)(3))
2(1)
x =
4 +/- √(16 - 12)
2
x =
4 +/- √(4)
2
x =
4 +/- 2
2
x =
4 + 2
x =
4 - 2
2
2
x =
6
x =
2
2 2
x = 3 x = 1
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