问题
填空题
若方程x2-x=0的两根为x1,x2(x1<x2),则x2-x1=______.
答案
∵x2-x=0,
∴x(x-1)=0,
∵x1<x2,
∴解得:x1=0,x2=1,
则x2-x1=1-0=1.
故答案为:1.
若方程x2-x=0的两根为x1,x2(x1<x2),则x2-x1=______.
∵x2-x=0,
∴x(x-1)=0,
∵x1<x2,
∴解得:x1=0,x2=1,
则x2-x1=1-0=1.
故答案为:1.