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我们知道,解高次不等式的基本思路是通过因式分解,将它化成左边为若干个一次或二次因式的积且右边为0的形式,然后可用“标根分区间”法解之。
We know that the basic idea of solving high-order inequalities is to factorize it into a form with a product of several primary or secondary factors on the left and a 0 on the right, which can then be solved using the “root-to-root partitioning” method.