化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
(a 1)(a 2)(a 3)(a
化简a(a+2)-(a-1)(a+1)
化简:(1-a)^2/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:(2a+1/a²-1)*a²-2a+1/a²-a-(1/a+1)
化简[a^2+a/a^2-1+(a^2-a分之根号下a^2-2a+1)
(a+2)(a-2)-a(a+1)化简
化简:2(a+1)-a
(高一集合)已知A={2,4,a*a*a-2a*a-a+7},B={1,a+3,a*a-2a+2,a*a*a+a*a+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+1/a)*=a*+2+1/a* (a-1/a)*=a*-2+1/a*