解:(X-3)(X+2)=0X^-X-6=0(X-根号2-1)(X-根号2+1)=0(X-根号2)^-1=0X^-2根号2X+2-1=0X^-2根号2X+1=0
x^2-x-6=0x^2-2根号2*x+1=0
x^2-x-6=0 x^2-2根号2*x+1=0