已知ax的平方+bx+c=0;求根;<br />系数A:<input type="number" +root2; } } } }</script> 相关文章: 2022-01-21 2021-05-25 2021-10-17 2021-12-02 2021-07-17 2021-11-12 2022-12-23 2022-12-23