化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
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化简(a+(1/a))*(1-a^2)/(1+2a+a^2)化简(a+(1/a))*(1-a^2)/(1+2a+a^2)化简(a+(1/a))*(1-a^2)/(1+2a+a^2)(a+(1/a))*
化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
(a + (1/a))*(1-a^2)/(1+2a+a^2)
=(a²+1)/a×(1+a)(1-a)/(1+a)²;
=(a²+1)(1-a)/a(1+a);
手机提问的朋友在客户端右上角评价点【满意】即可.
原式=(a²+1)/a*[-(a+1)(a-1)/(a+1)²]
=-(a²+1)/a*(a-1)/(a+1)
=-(a³-a²+a-1)/(a²+a)
(a + 1)/a*(1-a^2)/(1+2a+a^2)
=(a+ 1)/a*(1+a)(1-a)/(1+a)^2
=(a + 1)/a*(1-a)/(1+a)
=(1-a)/a
化简a(a+2)-(a-1)(a+1)
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