(1) 设这个根为m
m^2-3m+c=0
m^2-3m-c=0
c=0
x^2+3x=0 解得x=0或x=-3
(2) 2008^2*x^2-(2008^2-1)x-1=2008^2x(x-1)+(x-1)
=(2008^2x+1)(x-1)=0
解得 x=1或x=-1/2008^2
(a+b)^2009=1
(1) 设这个根为m
m^2-3m+c=0
m^2-3m-c=0
c=0
x^2+3x=0 解得x=0或x=-3
(2) 2008^2*x^2-(2008^2-1)x-1=2008^2x(x-1)+(x-1)
=(2008^2x+1)(x-1)=0
解得 x=1或x=-1/2008^2
(a+b)^2009=1