Answer :
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
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
