用配方法将二次三项式x2-6x+5变形的结果是(  )A.(x-3)2+8B.(x+3)2+14C.(x-3)2-4D.(x-3)2

2025-04-02 12:56:47
推荐回答(1个)
回答1:

x2-6x+5,
=x2-6x+9-9+5,
=(x2-6x+9)-4,
=(x-3)2-4.
故选C.