作业帮(3a²+2a-8)²-(a²-2a-8)²
来源：学生作业帮助网 编辑：作业帮 时间：2024/12/02 21:58:04
x)0NTS646JԵЄu5H6IE(/!|h4
ڨJcьHE .m m`haSaiMH5Jh 1" R
(3a²+2a-8)²-(a²-2a-8)²
(3a²+2a-8)²-(a²-2a-8)²
(3a²+2a-8)²-(a²-2a-8)²
=[(3a²+2a-8)+(a²-2a-8)][(3a²+2a-8)-(a²-2a-8)]
=(3a²+2a-8+a²-2a-8)(3a²+2a-8-a²+2a+8)
=(4a²-16)(2a²+4a)
=8(a²-4)(a²+2a)
=8a(a-2)(a+2)²