2x^2-5x+1 因式分解
问题描述：
2x^2-5x+1 因式分解
2X是二次项
答
2x^2-5x+1
=2(x^2-5x/2+1/2)
=2[(x^2-5x/2+25/16)-25/16+1/2]
=2[(x-5/4)^2-17/16]
=2(x-5/4-√17/4)(x-5/4+√17/4)