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Determinant (Page: 12)
Question No: # 113
Prove that $ \begin{vmatrix} 1 & b+c & b^2+c^2 \\ 1 & c+a & c^2+a^2 \\ 1 & a+b & a^2+b^2 \end{vmatrix} = (a-b) (b-c) (c-a) $
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