求方程x4+x2+x+1=0的四个复根中落在第一象限的那个根，要求用根式表达。(提示：作变量替换

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问题求方程x4+x2+x+1=0的四个复根中落在第一象限的那个根，要求用根式表达。(提示：作变量替换

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错误啦！

消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
文件: /twcms/kongphp/cache/cache_redis.class.php
位置: 第 85 行

<?php echo 'KongPHP, Road to Jane.'; ?>