来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 16:53:29
因式分解 -(x+2)²+16(x-1)²
-(x+2)²+16(x-1)²
=【4(x-1)-(x+2)】【4(x-1)+(x+2)】
=(3x-6)(5x-2)
=3(x-2)(5x-2)
再问: 还有:(3x+2m)²-(x-2m)²
再答: :(3x+2m)²-(x-2m)² =【(3x+2m)-(x-2m)】【(3x+2m)+(x-2m)】 =(2x+4m)(4x) =8x(x+2m)