HMMT 二月 2003 · GEN1 赛 · 第 7 题
HMMT February 2003 — GEN1 Round — Problem 7
题目详情
英文原题
- Find the real value of x such that x + 3 x + 3 x + 7 = 0.
解析
英文解析
- Find the real value of x such that x + 3 x + 3 x + 7 = 0.
√
Solution: − 1 − 63
√
3 33
Rewrite the equation as ( x + 1) + 6 = 0 to get ( x + 1) = − 6 ⇒ x + 1 = − 6 ⇒ x =
√
− 1 − 6.3