Do the columns of the matrix span R3 A=\left[\begin{array}{ccc} 3 & 9 & 30 \\ -3 & -9 & -30 \\ 1 & 3 & 10 \end{array}\right] A=\left[\begin{array}{cc} 8 & 6 \\ -2 & -4 \\ 1 & 0 \end{array}\right] A=\left[\begin{array}{ccc} -5 & -25 & -76 \\ -8 & -41 & -124 \\ 2 & 10 & 30 \end{array}\right] A=\left[\begin{array}{cccc} -7 & 7 & 0 & -56 \\ -4 & 5 & -2 & -36 \\ 4 & -4 & 0 & 32 \end{array}\right]

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