a−1+1a+1=?\frac{a^{-1}+1}{a+1}=?a+1a−1+1=? AaBa+1C1/aD1/(a+1)Answer: C. 1/a Read Explanation: a−1+1a+1=1a+1a+1\frac{a^{-1}+1}{a+1}=\frac{\frac1a+1}{a+1}a+1a−1+1=a+1a1+1 =(a+1)/aa+1=(a+1)/a×1/(a+1)=\frac{(a+1)/a}{a+1}=(a+1)/a\times1/(a+1)=a+1(a+1)/a=(a+1)/a×1/(a+1) =1/a=1/a=1/a Read more in App
