17-03-2015
Mathematics

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xsquaredminus 4xplus3=0

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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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