かい
kai

Noun

1. solution (of an equation, inequality, etc.); root (e.g. of a polynomial)

Mathematics
以下 いか方程 ほうてい しき かい もとめよ。
ikano hōtēshikino kaio motomeyo.
Find the solution to the following equation.
Noun

2. solution (to a given problem); answer

Noun

3. explanation; interpretation