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绝对值是初中数学中最活跃的概念之一,它能与数学中的许多知识联姻而生成新的问题,我们把绝对值符号中含有未知数的方程叫
Absolute value is one of the most active concepts in junior high school mathematics. It can be combined with many knowledge in mathematics to generate new problems. We call the equation with unknowns in the absolute value symbol.