(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
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(2+1/a-1-1/a+1)÷(a-a/1-a²)化简(2+1/a-1-1/a+1)÷(a-a/1-a²)化简(2+1/a-1-1/a+1)÷(a-a/1-a²)化简(
(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
(2+1/a-1-1/a+1)÷(a-a/1-a²)
=(2a²-2+a+1-a+1)/(a+1)(a-1)÷[-(a-a³-a)/(a+1)(a-1)]
=2a²/(a+1)(a-1)×(a+1)(a-1)/a³
=2/a
=2/2
=1
A-A=0 A+A=?A÷A=1 A×A=?(A+A)+(A-A)+(AxA+A÷A)=100 A=?
【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
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