化简a(a+2)-(a-1)(a+1)
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化简a(a+2)-(a-1)(a+1)
化简1/a(a+10)+1/(a+1)(a+2)+...+1/(a+2009)(a+2010)
(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
化简:-a+a/a+1
[a/(a-1)+a/(a+2)](a+2)/(2a平方+3a+1)化简
a*a*a*a+a*a+1/a*a+a+1 化简
化简:(2a+1/a²-1)*a²-2a+1/a²-a-(1/a+1)
化简:(1-a)^2/a-1 (a
化简[a^2+a/a^2-1+(a^2-a分之根号下a^2-2a+1)
化简2a(a-1/2)+a
化简:(a-a/a+1)÷(a²-2a)/(a²-4)×1/(a+2)
(a 1)(a 2)(a 3)(a
(a+2)(a+1)-a(a-3)
化简a分之a方-1+a分之a+1的结果是( )A.a+a^2 B.a-1 C.a+1 D.1
(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
化简(a + (1/a))*(1-a^2)/(1+2a+a^2)
化简:(2a/a-1+a/1-a)除以a
A-A=0 A+A=?A÷A=1 A×A=?(A+A)+(A-A)+(AxA+A÷A)=100 A=?