The square of the distance of the point of intersection P of the li...

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The square of the distance of the point of intersection
P of the line \( \frac{x-1}{2}=\frac{y-2}{3}=\frac{z+1}{6} \) and the plane

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\( 2 x-y+z=6 \) from the point \( (-1,-1,2) \) is
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