Answers

2016-07-21T23:10:18+08:00
V^2 - 2v + 10 = 0

v^2 - 2v = -10
v^2 -2v + 1 = -10 + 1
v^2 -2v + 1 = -9
(v- 1)^2 = -9
√(v-1)^2 = √-9
v - 1 = ±9

v - 1 = 9
v = 9 + 1 
v = 10

v - 1 = -9
v = -9 + 1
v = -8 
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