Let a plane \( P \) pass through the point \( (3,7,-7) \) and contain the line, \( \dfrac{x-2}{-3}=\dfrac{y-3}{2}=\dfrac{z+2}{1} \). If distance of the plane \( P \) from the origin is \( d \), then \( d^2 \) is equal to \( \underline{\quad} \).
