Find the sum of roots of the following equation:
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We denote that:
t = x 2 − 1 2 x + 8 1 → t 2 + t = 9 0 , t 2 + t − 9 0 = 0
→ t = 9 , x 2 − 1 2 x = 0 → x = 0 , x = 1 2
S u m = 1 2