Please solve part 3:

Find the sum of solutions of the following equations:
(i) x2 – 5|x| − 4 = 0
(ii) (x – 3)2 + |x – 3| – 11 = 0
(iii) |x| 3  – 15x2– 8|x| – 11 = 0
(iv)||x–3| – 4| =1
(v) 2|x| + 3|x| + 4|x| = 9
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