Definition

Examples

• 计算的时候别忘了写根号。
  Jìsuàn de shíhou bié wàngle xiě gēn háo.
  Don't forget to write the radical sign when calculating.
• 这个根号表示开平方。
  Zhège gēn háo biǎoshì kāi píngfāng.
  This radical sign means taking the square root.
• 在方程中，根号下面的数必须是非负数。
  Zài fāngchéng zhōng, gēn háo xiàmiàn de shù bìxū shì fēifùshù.
  In an equation, the number under the radical sign must be non-negative.