Question: 3. Determine if 2 B = 4 5 15 is invertible by computing its reduced row echelon form. You may use a calculator, but explain

3. Determine if 2 B = 4 5 15 is invertible by computing its reduced row echelon form. You may use a calculator, but explain your answer.4. Find a basis for the columnspace of the following matrix A. Show all work. 8 12 1 A : 6 9 1 2 3 1

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