cubic equation的用法和樣例：
例句
- Descartes's solution of a depressed quarto equation employs the method of undetermined coefficients.
笛卡兒的分解四次方程的解法採用待定係數。 - This procedure is used to calculate a quadratic equation of one dollar cottage roots, very useful, and they hope to help you.
這個程序是用來計算一個一元二次方程的平房根的，非常有用，希望對你有幫助。
