Question

设方程x²+1993x-1994=0和(1994x²)-1993*1995x-1=0的两个较小根次是

Answer 1

(x-1)(x+1994)=0 x=-1994

(1994^2)x^2-(1994^2-1)x-1=0 (1994^2)x^2-(1994^2)x+x-1=0 [(1994^2)x+1](x-1)=0 x=-1/1994^2

-1994*-1/1994^2 =1/1994