同学们在解分式方程时,需要把分式方程化为整式方程,这样方程中的未知数取值范围就可能扩大了,由此得到的整式方程的根就有可能不是原方程的根,而此时产生的根,即为原分式方程的增根。因此,在解分式方程时,需对所求的根进 When students solve fractional equations, they need to turn the fractional equations into integral equations, so that the range of unknown values ​​in the equations may be expanded, and the roots of the resulting integral equations may not be the roots of the original equations. The root produced at this time is the root of the original fractional equation. Therefore, when solving fractional equations, the roots required