作业帮化简:(3a-2/)+(1-1/)÷(1+1/)
来源：学生作业帮 编辑：拍题作业网作业帮 分类：数学作业 时间：2024/04/25 12:35:52
化简:(3a-2/)+(1-1/)÷(1+1/)
原式=[(3a-2)/(a²-a-2)]+[1-1/(a+1)]÷[1+1/(a-1)]
=[(3a-2)/(a²-a-2)]+{ [(a+1)-1]/(a+1) }÷{[(a-1)+1]/(a-1) }
=[(3a-2)/(a²-a-2)]+[a/(a+1)]÷[a/(a-1)]
=[(3a-2)/(a²-a-2)]+[a/(a+1)]×[(a-1)/a]
={ (3a-2)/[(a-2)(a+1)] }+[(a-1)/(a+1)]
={ (3a-2)/[(a-2)(a+1)] }+{(a-1)(a-2)/[(a-2)(a+1)] }
=[(3a-2)+(a-1)(a-2)]/[(a-2)(a+1)]
=(3a-2+a²-3a+2)/[(a-2)(a+1)]
=a²/(a²-a-2)
=[(3a-2)/(a²-a-2)]+{ [(a+1)-1]/(a+1) }÷{[(a-1)+1]/(a-1) }
=[(3a-2)/(a²-a-2)]+[a/(a+1)]÷[a/(a-1)]
=[(3a-2)/(a²-a-2)]+[a/(a+1)]×[(a-1)/a]
={ (3a-2)/[(a-2)(a+1)] }+[(a-1)/(a+1)]
={ (3a-2)/[(a-2)(a+1)] }+{(a-1)(a-2)/[(a-2)(a+1)] }
=[(3a-2)+(a-1)(a-2)]/[(a-2)(a+1)]
=(3a-2+a²-3a+2)/[(a-2)(a+1)]
=a²/(a²-a-2)
【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)(a
求 化简(a^2-a+1)^2×(a-a^2-1)^2m÷(a-a^2-1)^3m
(a2-a)a2-2a-3÷a(a-3)=a(a-1)(a+1)(a
a/a-1÷（a-a/2a-1)
a(a-1)(a-2)(a-3)(a-4)因式分解
化简（9-a²）/a²+6a+9÷（a²-3a）/a+3+1/a
（2+1/a-1-1/a+1）÷（a-a/1-a²）化简
化简：(1-a)^2/a-1 (a
化简3a×a×a+12a×a-6a-12 a=根号7-1
化简(1-a^2+4a+4)÷a^2+2a分之4a-4
9-a²/a²+6a+9÷a²-3a/a+1/a