解由题知(5x-1)^2=0解得x1=x2=0.
25x²-10x+1=0,(5x)²-(5+5)x+1=0,(5x-1)(5x-1)=0,(5x-1)²=0,5x=1x=1/5即x₁=x₂=1/5
25x²-10x+1=0解:(5X-1)(5X-1)=0 5X-1=0 5X=1 X=1/5