Find the determinant of the matrix A=(111abca2b2c2)A = \begin{pmatrix} 1 & 1 & 1 \\ a & b & c \\ a^2 & b^2 & c^2 \end{pmatrix}A=1aa21bb21cc2 if a=1,b=2,c=3a=1, b=2, c=3a=1,b=2,c=3.
111
222
333
444