因式分解:2mx^2-4mn+2m
问题描述：
因式分解:2mx^2-4mn+2m
答
2mx^2-4mn+2m
=2m(x²-2n+1)
答
题目庆是2mn^2-4mn+2m
=2m(n^2-2n+1)
=2m(n-1)^2