a biquadratic equation [root]

• 四次方程式[乘根]

a biquadratic equation [root]的用法和样例：

例句

1. The pupil made great efforts to work out the linear equation.
   那个小学生费了九牛二虎之力去解这个一次方程式。
2. Roger can solve quadratic equations as easy as falling off a log.
   罗杰能轻而易举地解二次方程式。