Question

Which elementary row operation will reduce the x–element in row 2 to 0 in this matrix?

Answer 1

Will metal

Answer 2

@Abhisar @wio

Answer 3

@Directrix

Answer 4

Suppose we add -2 to 2, which gives 0. How can we go about that? Hint: There are at least two ways.

Answer 5

Also note that row 3 has a 2...

Answer 6

-2R1 + R2?

Answer 7

is that the answer?

Answer 8

Why would you multiply row 2 by -2?

Answer 9

I have no idea.. I don't know how to do matrices

Answer 10

Did you ever think of just subtracting row 2 from row 3?

Answer 11

@Rnford

Answer 12

no

Answer 13

Also there are many answers but what you said the first time is correct! I thought it said -2R2 bu it said -2R1
lol so -2R1 + R2 is also correct :)