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对于一元二次方程ax~2+bx+c=0(a≠0)的两根X_1,X_2,确X_1+X_2=-b/a,(1)X_1·X_2=c/a.(2) 这就是著名的韦达定理. 我认为韦达定理的内容尚可补充下列一条,以简便解题过程:
For the two X_1,X_2 of the quadratic equation ax~2+bx+c=0(a≠0), confirm X_1+X_2=-b/a,(1)X_1·X_2=c/a.(2) This is the famous Vedic theorem. I think the content of Vedic theorem can be supplemented with the following one to simplify the problem solving process: