来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/08/17 00:14:20
因式分解a^m+2-a^m
a²(x-y)^3+9b²(y-x)^3
a²-1+b²-2ab
=a^m(a²-1)
=a^m(a+1)(a-1)
再问: a²(x-y)^3+9b²(y-x)^3 a²-1+b²-2ab
再答: a²(x-y)^3+9b²(y-x)^3 =a²(x-y)³-9b²(x-y)³ =(x-y)³(a²-9b²) =(x-y)³(a+3b)(a-3b) a²-1+b²-2ab =(a²-2ab+b²)-1 =(a-b)²-1 =(a-b+1)(a-b-1) 请采纳