HMMT 十一月 2009 · 冲刺赛 · 第 25 题
HMMT November 2009 — Guts Round — Problem 25
题目详情
英文原题
- [ 14 ] Find all solutions to x + 2 x + 2 x + 2 x + 1 = 0 (including non-real solutions).
解析
英文解析
- [ 14 ] Find all solutions to x + 2 x + 2 x + 2 x + 1 = 0 (including non-real solutions).
2 2
Answer: − 1 , i, − i We can factor the polynomial as ( x + 1) ( x + 1).