Question: Need help with these questions 4th edition 1.2 #4: Reduce the augmented matrix to reduced echelon form. Then circle the pivot positions in the final

Need help with these questions

4th edition 1.2 #4: Reduce the augmented matrix to reduced echelon form. Then circle the pivot positions in the final matrix and in the original matrix, and list the pivot columns. 2 4 5 2 4 4 4 15 4 4" edition 1.2 #10: Find the general solution of the system whose augmented matrix is given below. (-2 2 -1 4 4 5 4th edition 1.2 #16: The * symbols below represent unknown numbers, and the = symbols represent nonzero numbers. The matrix shown represents the augmented matrix for a system of linear equations. Determine if the system is consistent, and if so, determine whether there is a unique solution. a. O b. O

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