一元二次方程根与系数的关系定理又称为韦达定理:若一元二次方。。六卜+c一o(。、O)两缈根为!卜、;则%1+、一二含,xl’劣2一去其逆定理也成立续口果两个实数与+二沪一含丙、二舍测卜翔是方程i青文点注: 题中a尹b不可少,不然叭石不一定是二2+4劣二3二。的才民 蘸肇设、‘为撇漆L The theorem of the relation between the root and the coefficient of a quadratic equation is also known as the Vedic theorem: if it is a unitary quadratic. . Six Bu + c a o (., O) two roots are! Bu,; then% 1 +, one with two, xl ’inferior 2 to its inverse theorem also established two consecutive real fruit and two Shanghai With C, Si She measured Bu Xiang is the equation i Qing Wendian Note: The title of a Yin b is indispensable, otherwise Stone is not necessarily the second 2+4 inferior two two two two. The talented people