若x1、x2是方程的两根，这就是韦达定理，反之，若，则以x1,x2为两根的方程是，这是韦达定理的逆定理．若用它解某些特殊类型的二元二次方程组，则省时省力．例1解方程组：解原方程组可化为由韦达定理的逆定理可知，元二次方程的两根．解之，得＝3，．原方程组的解为例2解方程 If x1 and x2 are the two roots of the equation, this is the Vedic theorem. Conversely, if the equation is x1, x2, it is the inverse of the Vedic theorem. If you use it to solve some special types of binary quadratic equations, save time and effort. Example 1 Solving equations: Solving the original equations can be known as the inverse theorem of Vedic theorem. Two roots of the quadratic equation are known. Solution, got = 3,. The solution of the original equation set as an example 2 solution equation