4x2﹣6x﹣3=0（运用公式法）                                      ...

问题详情：

4x2﹣6x﹣3=0（运用公式法）                                                                  

【回答】

∵a=4，b=﹣6，c=﹣3，                                                                          

∴△=b2﹣4ac=（﹣6）2﹣4×4×（﹣3）=36+48=84，                                    

∴x==；                                                                      

知识点：解一元二次方程

题型：计算题