提到分式方程,大家自然会联想到增根,在化分式方程为整式方程求解的过程中,由于去分母而出现使分母为零的根,即增根,所以解分式方程时必需要检验.检验增根是解分式方程的一个重要步骤,值得我们充分注意.本文通过实例探讨分式方程与增根的有关问题,旨在抛砖引玉.1增根的存在性例 When we talk about fractional equations, we naturally think of adding roots. In the process of solving fractional equations as integral equations, the denominator causes the root of the denominator to be zero, that is, to increase roots. It is necessary to test. Extensive rooting is an important step in solving fractional equations and deserves our full attention. This article discusses the problems related to fractional equations and root augmentation through examples, aiming at attracting bricks and jade. 1 Existence of rooting