在二次根式的学习中,要求所有二次根式的结果为最简二次根式,即分母中不含根号(或根号中不含分母),也不含能开的尽方的因式.因此,二次根式的化简显得尤为重要,这也是学习二次根式必须掌握的技能.对二次根式的化简而言,只含有数字型二次根式由于数字的直观性,相对比较好掌握些;而对于含有字母型二次根式的化简,则相对比较抽象些,且显得比较难于掌握.但只要我们勤于训练,勤于思考,一切都会解决的. In quadratic learning, all quadratic roots are required to have the simplest second radical, ie the denominator does not contain a root (or denominator in the root), nor the factor Therefore, the reduction of quadratic roots is particularly important, which is also the skill that must be learned to learn the quadratic root.For the radical reduction of the quadratic root, it contains only the numeric quadratic root because the numerical intuition is relatively good Grasp some; while for the reduction with the alphabetical quadratic root, it is relatively more abstract and more difficult to master, but as long as we diligently train and think hard, everything will be solved.