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根号内含有未知数的方程叫根式方程,解根式方程时,一般先把原方程适当移项,然后把方程两边乘方相同次,使它变成一个有理方程;再解所得的有理方程;最后把解有理方程所得的根,代入原方程进行验算,将增根舍去.对于特殊的根次方程,还要根据方程的特点灵活运用各种解题技巧,先将解根式方程的一些方法和技能归纳如下.
The root number contains an unknown equation called the root equation, root-equation, the general first of the original equation appropriate shift, and then the same power on both sides of the equation, making it a rational equation; re-solution of the rational equation; Finally Solve the roots of rational equations, into the original equation for checking, will increase by 11. For the special root equation, but also according to the characteristics of the equation flexibility to use a variety of problem-solving skills, the first solution to some of the root-equation equations and Skills are summarized as follows.