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一元二次方程是初中代数的重点,也是中考的热点,其解法更多地是融在解分式方程,二元二次方程组及列方程解应用题中,当然,一元二次方程的解法只要熟悉了各解法的步骤,问题也就迎刃而解了。但很多时候只注重它的解题过程而忽视了它的结果,那么在这里谈谈一元二次方程中的解中容易出错而又易被忽视的几个问题,也便引起我们重视。
Unary quadratic equation is the focus of junior high school algebra, is also a hot spot in the examination, the solution is more melt in the solution equation, bivariate quadratic equations and column equation solution to the problem, of course, a quadratic equation solution As long as the familiar steps of the solution, the problem will be solved. However, most of the time, we only pay attention to its problem-solving process and neglect its result. Therefore, we should pay more attention to several issues that are easy to go wrong and easily overlooked in the solution of one-quadratic equations here.