(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)

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(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)
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(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)
(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)

(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)
(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)
=2(a+1)-a/(a+1)-(a+2)+(5a+9)/(a+2)-3(a-2)-(8a-17)/(a-2)+2(a-3)+
(4a-13)/(a-3)
=-1+1/(a+1)+5-1/(a+2)-8+1/(a-2)+4-1/(a-3)
=1/(a-2)+1/(a+1)-1/(a+2)-1/(a-3)
=1/(a+1)(a+2)-1/(a-2)(a-3)
=(a^2-5a+6-a^2-3a-2)/(a+1)(a+2)(a-2)(a-3)
=-4(2a+1)/(a+1)(a+2)(a-2)(a-3)

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(a 1)(a 2)(a 3)(a (a+2)(a+1)-a(a-3) 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=[ ] (通分） a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6 （a-a/a+1)/(a*a-2a)*(a+1)/(a*a+3a+2)要详细的计算说明！ a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=? 幂的计算题1、a×a^2×a^3×a^4×a^52、a+2a+3a+4a+a×a^2×a^3×a^4 计算(3a×a)+(2a×3a)+(3a×a)+[a×(a+2a+2a+2a+a)] [a^2-4/(a-3)(a+2)+(a+2)/a-3]除以a+1/a-3 [a/(a-1)+a/(a+2)](a+2)/(2a平方+3a+1)化简 (a+1/a方-a+4/1-a方)/a方+2a-3/a+3 求和：1/a+2/a^a+3/a*a*a+...+n/a的n次方 已知a×a+a-1=0求a*a*a+2a+3 a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a 因式分解 a^3+a^2-a-1 (a+1)(a+2)(a-3)计算 1A,2A,3A...