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Olympiad-Math
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Class 9
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Q)
In a $\Delta ABC,\angle BCA=90^{\large\circ}$ and Q is the midpoint of BC.Then $AB^2+3AC^2=$______
$\begin{array}{1 1}AQ^2\\3AQ^2\\4AQ^2\\2AQ^2\end{array} $
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