Equation of a line in space and skew linesHard

Area of Triangle with Point Image

Let P be the image of the point Q(7, –2, 5) in the line $L:\frac{{x - 1}}{2} = \frac{{y + 1}}{3} = \frac{z}{4}$ and R(5, p, q) be a point on L. Then the square of the area of ΔPQR is ____

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