10. The curve \(C\) has equation \(y = x ^ { 3 } - 2 x ^ { 2 } - x + 3\)
The point \(P\), which lies on \(C\), has coordinates \(( 2,1 )\).
- Show that an equation of the tangent to \(C\) at the point \(P\) is \(y = 3 x - 5\)
The point \(Q\) also lies on \(C\).
Given that the tangent to \(C\) at \(Q\) is parallel to the tangent to \(C\) at \(P\), - find the coordinates of the point \(Q\).