化简a^2-2a+1/a^2-1+a^2-a/a+1+2/a,其中a=根号3

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化简a^2-2a+1/a^2-1+a^2-a/a+1+2/a,其中a=根号3

原式=(a-1)^2/(a+1)(a-1)+a(a-1)/(a+1)+2/a
=(a-1)/(a+1)+a(a-1)/(a+1)+2/a
=(a+a^2-a)/(a-1)+2/a
=a^2/(a-1)+2/a
=(a^3+2a-2)/a(a-1)
=(a^3+2a-2)/(a^2-a)
=(3√3+2√3-2)/(3-√3)
=(5√3-2)/(3-√3)
=(15√3+15-6-2√3)/(9-3)
=(9+13√3)/6

(a 1)(a 2)(a 3)(a (a+2)(a+1)-a(a-3) [a/(a-1)+a/(a+2)](a+2)/(2a平方+3a+1)化简 化简2a(a-1/2)+a 化简：(1-a)^2/a-1 (a a-1/a+2 1-a/-2-a -2×a×1/a 计算：[a-(1/a)]/a^2-2a+1/a a(a-1)(a-2)(a-3)(a-4)因式分解 化简(a+1)(a-2)/(a+2)(a-2)+3 【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a－a a=[ ] [4]a－a=a＋a a=[ ] (a+2)(a-2)-a(a+1)化简 化简：a^4-(1-a)(1+a)(1+a^2) 化简2a-(a-1)+a²-1/a+1 化简：1/(a+1)×a/(a²+2a+1) 化简a(a+2)-（a-1)(a+1） 化简a²-2a+1/a-a²