2(a-2x)(-2)x+(a-2x)^2=(a-2x)(a-6x)

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/14 11:18:40

2(a-2x)(-2)x+(a-2x)^2
=(a-2x)(a-6x)

2(a-2x)(-2)x+(a-2x)^2
=(2a-4x)(-2x)+a^2-4ax+4x^2
=-4ax+8x^2+a^2-4ax+4x^2
=12x^2-8ax+a^2
=(a-2x)(a-6x)

将(a-2x)提出来,就行了