Let the domain of the function \( f(x)=\log_{3}\log_{5}\!\big(7-\log_{2}(x^{2}-10x+85)\big)+\sin^{-1}\!\left(\left|\dfrac{3x-7}{17-x}\right|\right) \) be \( (\alpha,\beta] \). Then \( \alpha+\beta \) is equal to:
\(12\)
\(8\)
\(9\)
\(10\)