神马作文网化简 (1- +)+(a^3+a^2-a-1/a^2-3a+2)
来源：学生作业帮 编辑：神马作文网作业帮 分类：数学作业 时间：2024/11/19 17:12:39
化简 (1- +)+(a^3+a^2-a-1/a^2-3a+2)
原式=(a-6)/(a+1)+12/(a+1)^2+(a+1)(a^2-1)/[(a-1)(a-2)]
=[(a-6)(a+1)+12]/(a+1)^2+(a+1)^2/(a-2)
=(a^2-5a+6)/(a+1)^2+(a+1)^2/(a-2)
=[(a^2-5a+6）（a-2)+(a+1)^4]/[(a-2)(a+1)^2]
=[a^4+4a^3+6a^2+4a+1
+a^3-5a^2+6a
-2a^2+10a-12]/[(a-2)(a+1)^2]
=(a^4+5a^3-a^2+20a-11)/[(a-2)(a+1)^2].
=[(a-6)(a+1)+12]/(a+1)^2+(a+1)^2/(a-2)
=(a^2-5a+6)/(a+1)^2+(a+1)^2/(a-2)
=[(a^2-5a+6）（a-2)+(a+1)^4]/[(a-2)(a+1)^2]
=[a^4+4a^3+6a^2+4a+1
+a^3-5a^2+6a
-2a^2+10a-12]/[(a-2)(a+1)^2]
=(a^4+5a^3-a^2+20a-11)/[(a-2)(a+1)^2].
(a 1)(a 2)(a 3)(a
a(a-1)(a-2)(a-3)(a-4)因式分解
【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a－a a=[ ] [4]a－a=a＋a
(a+1)(a+2)(a-3)计算
1A,2A,3A...
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
因式分解：a(a-2)(a-3)(a+1)+2
(a-1)(a-2)(a-3)(a-4)-3因式分解,
1+a^1+a^2+a^3+.+a^n=?
计算a^3/a-1-a^2-a-1
已知 a>1,求证a^3>a+1/a-2
a^1+a^2+a^3+..+a^n等于多少