绝对值是初中代数的重点,它是中考与竞赛中的常见问题.绝对值也是初中代数的难点,但灵活巧妙地运用绝对值的非负性、定义、几何意义,就能化难为易,巧解问题.1.巧用绝对值的非负性解题例1如果x-2+x-2=0,那么x的取值范围是().(A)x2(B)x2(C)x≥2(D)x≤2(第十六届江苏省初中数学 Absolute value is the focus of junior high school algebra, it is a common problem in the examination and competition. Absolute value is also difficult for junior high school algebra, but flexible and clever use of the non-negative, definition, geometric meaning of the absolute value, can be difficult, easy Solving Problems 1. Use non-negativity solutions with absolute values ​​Example 1 If x-2+x-2=0, then the range of x is (). (A) x 2 (B) x 2 (C) x ≥2(D)x≤2(The 16th Jiangsu Junior High School Mathematics