What is a factor of 12x2 − 4x − 1?
6x-1
2x+1
2x-1
none of the above

The correct option is 3.

Step-by-step explanation:

The given expression is

Write the middle term as -6x+2x.

Taking out the greatest common factor from each parenthesis.

Taking out the common factors.

It means (2x-1) and(6x+1) are two factors of the given expression. Therefore the correct option is 3.

is should be y = 5x

step-by-step explanation:

correct me if im wrong