Question

分解因式m^2-2m+1

1.分解因式m^2-2m+1
2.已知反比例函数y=1/x当x大于1时，y的取值范围
3.先化简，再求(x^2)/(x-1)+x/(1-x),其中x=√2013

Answer 1

1),m^2-2m+1=(m-1)^2
2),y=1/x当x>1
x=1/y>1
0<y<1
3),(x^2)/(x-1)+x/(1-x),其中x=√2013
(x^2)/(x-1)+x/(1-x)=x(x-1)/(x-1)=x=√2013

Answer 2

1.(m-1)(m-1)
2.取值范围：0<y<1
3.原式= -(x^2)/-(x-1)+x/-(x-1)
=-x^2+x/-(x-1)
=-x(x-1)/-(x-1)
=x
当x=√2013，原式=x=√2013

Answer 3

1、（m-1）^2；2、y小于1；3、√2013