2x平方+4x+1因式分解

问题描述:

2x平方+4x+1因式分解

2x^2+4x+1
=2(x^2+2x)+1
=2(x^2+2x+1)+1-2
=2(x+1)^2-1
=(√2x+√2+1)(√2x+√2-1)