Find two different row operations to obtain a leading 1 in
the first row of the matrix.(Choose two answers)

subtract row 1 from row 2
multiply row 1 by -4
subtract row 2 from row 1
add row 1 to row 2
multiply row 1 by

To obtain a leading 1 in the first row of the matrix, you can:

Multiply row 1 by to change the -4 into a leading 1. After this operation, the first row becomes .

Next, you can subtract row 2 from row 1. This operation helps to keep the leading 1 intact while adjusting the elements in row 1 for further operations if needed. The resulting matrix maintains simplicity and is ready for the next steps in row reduction!