在不等式的教学中，我门往往会碰到解高亥不管式的问题．如果给出的一元高灰不等式，能路转化成若干个一次因式积的不管式，则可采用本文介绍的“箭头活”迅速写出真解集采．解题D诀是：小大一字排，箭头插进术，大雾竖方苗，小霎隔仅栽，数二间正在，要元额角埋，不着连在6，批? In the teaching of inequality, we often encounter the problem of solving the problem. If the given high-gray inequality is given, and the energy path is converted into a number of one-factor product-by-product equations, then the “arrow life” described in this article can be used to rapidly write true solutions. The solution to the problem is: small row of words, arrows inserted into the surgery, the fog of vertical seedlings, planting only a small planter, the number of two is, to be buried in the amount of Yuan, not even in the 6, approved?