北魏胡夏和宋朝西夏:分解因式!!!急!!!

来源:百度文库 编辑:中科新闻网 时间:2024/07/08 19:43:38
x^4 +2001x^2 +2000x +2001
要过程!!!!

x^4 +2001x^2 +2000x +2001
=x^4 +2002x^2-x^2 +2000x +2001
=x^4 +2002x^2-(x-2001)(x+1)
=x^4 +2002x^2+(-x+2001)(x+1)
=(x^2+(-x+2001))(x^2+(x+1))
=(x^2-x+2001)(x^2+x+1)