(1)化简:(1/a+1+1/a-1)/【2/(a的平方-2a+1)】 (2)求(1)中化简结果比3/a+1大2时a的值.
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(1)化简:(1/a+1+1/a-1)/【2/(a的平方-2a+1)】 (2)求(1)中化简结果比3/a+1大2时a的值.
(1)化简:(1/a+1+1/a-1)/【2/(a的平方-2a+1)】 (2)求(1)中化简结果比3/a+1大2时a的值.
(1)化简:(1/a+1+1/a-1)/【2/(a的平方-2a+1)】 (2)求(1)中化简结果比3/a+1大2时a的值.
(1)化简:(1/a+1+1/a-1)/【2a/(a的平方-2a+1)】 这里是不是少一个a
=[(a-1)/(a+1)(a-1)+(a+1)/(a+1)(a-1)]×(a-1)²/2a
=2a/(a+1)(a-1)×(a-1)²/2a
=(a-1)/(a+1)
=(a-1)/(a+1)
(2)求(1)中化简结果比3/a+1大2时a的值.
(a-1)/(a+1)=3/(a+1)+2
∴a-1=3+2a+2
a=-6
化简:-a+a/a+1
a*a*a*a+a*a+1/a*a+a+1 化简
A-A=0 A+A=?A÷A=1 A×A=?(A+A)+(A-A)+(AxA+A÷A)=100 A=?
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
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