Ononot — Calculate \det(A) if A = \begin{pmatrix} 1 & 1 & 1 \\ a & b

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Determinantsmedium

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Calculate $\det(A)$ if $A = \begin{pmatrix} 1 & 1 & 1 \\ a & b & c \\ a^2 & b^2 & c^2 \end{pmatrix}$ where $a=1, b=2, c=3$ .