Express each column vector of AA as a linear combination of the ordered column vectors C, C2, and c3 of A. [2 -6 6 A = 6 6 0 4 6 434 Enter first column as a linear combination of columns of A in terms of the vectors C, C2, and c3: Enter second column as a linear combination of columns of A in terms of the vectors C, C2, and c3: Enter third column as a linear combination of columns of A in terms of the vectors C, C2, and c3: