一元二次方程是初中数学的重点内容,必须认真学好.学习一元二次方程除掌握教材的内容外,还必须注意以下五点.一、注意掌握推导一元二次方程求根公式所体现的方法——配方法一元二次方程求根公式固然重要,它所体现的方法更重要.我们不仅要注意公式,而且 Unary quadratic equation is the key content of junior high school mathematics, must be carefully studied.Learning a quadratic equation in addition to grasping the content of the textbook, but also must pay attention to the following five points: First, pay attention to the derivation of a quadratic equation roots method of expression - Methodology The quadratic equation of the quadratic equation is important, but the method it embodies is more important. We must not only pay attention to the formula, but also