4+9(x-y)²+12(x-y)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 05:20:28
4+9(x-y)²+12(x-y)
x)3ѶԨЭTS6464lqIِ$eMF"m B!ƕFPM6yv W/

4+9(x-y)²+12(x-y)
4+9(x-y)²+12(x-y)

4+9(x-y)²+12(x-y)
4+9(x-y)²+12(x-y)
=9(x-y)²+12(x-y)+4
=[3(x-y)+2]²
=(3x-3y+2)²