2k16樱木花道面补:一道分解因式

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/07 12:33:46
1/4x2-x-y2+2y
字母后的数字为次方

1/4x^2-x-y^2+2y
=(1/4x^2-x+1) -(y^2-2y+1)
=(1/2x-1)^2-(y-1)^2
=(1/2x-1+y-1)(1/2x-1-y+1)
=(1/2x+y-2)(1/2x-y)

1/4x^2-x-y^2+2y
=(1/4x^2-x+1) -(y^2-2y+1)
=(1/2x-1)^2-(y-1)^2
=(1/2x-1+y-1)(1/2x-1-y+1)
=(1/2x+y-2)(1/2x-y)