Answer:
Last option: 4
Step-by-step explanation:
The quadratic equation simplified:
has the form:

In this case, you can identify that "a", "b" and "c" are:

To solve this quadratic equation by completing the square, Carlos should add
to both sides of the equation. This is:

Then:
Therefore you can observe that the number he should add to both sides of the equation is: 4
You would divide the 2/3 by 4 which would be 1.6 recurring and then put that back into a fraction which would be 1/6. I'm not sure if his is correct but this what is learnt ♡♡chyna
Answer:
the answer is c
Step-by-step explanation: