在中考中,单独的根式问题,多以填空题或选择题的形式出现,与分式、勾股定理、一元二次方程等知识结合的根式问题一般以解答题的形式出现.考点1二次根式的概念【考点解读】形如a%(a≥0)的式子叫做二次根式.判断一个式子是不是二次根式,一定要紧扣概念,看所给式子是否同时具备 In the senior high school entrance examination, the only root problems, mostly in the form of blank questions or multiple choice questions, and fractional, Pythagorean theorem, one quadratic equation and other knowledge combined with the root problems generally appear in the form of answer questions. The concept of the root 【Interpretation of the test】 shaped as a% (a ≥ 0) of the formula called the quadratic root To determine an equation is not a quadratic, must be closely linked to the concept of whether the given formula is also available