Question

$$\frac{ 5x }{ 3 { x }^{ 2 } -1 } - \frac{ 6 { x }^{ 2 } -2 }{ 3 { x }^{ 2 } -1 } + \frac{ { x }^{ 2 } +x-2 }{ 3 { x }^{ 2 } -1 }$$