26-02-2015
Mathematics

Answered

complete the perfect square v^2-2v=3

Verified Answer :

Panoyin Panoyin

27-02-2015

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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