因式分解:2x²+4x+1,
问题描述:
因式分解:2x²+4x+1,
答
2x²+4x+1
= 2x²+4x+2-1
= 2(x²+2x+1)-1
= 2(x+1)²-1
= 2(x+1+√2/2)(x+1-√2/2)