SOLUTION: Which elementary row operation will reduce the x - element in row 2 to 0 in this matrix? 1 1 1|12 (first row) 2 1 0|14 (second row) 2 0 3|19 (third row) a. 2R1 + R2 b.

Question 1180605: Which elementary row operation will reduce the x - element in row 2 to 0 in this matrix?
1 1 1|12 (first row)
2 1 0|14 (second row)
2 0 3|19 (third row)
a. 2R1 + R2
b. 2R3 - R2
c. -2R1 + R2
d. R1 + R2
Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.


Option C, the only option of four offered options.


It is OBVIOUS.

Responded and solved.

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In this problem, it is assumed that the offered options all replace the second row by the newly calculated row.

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