Question

Which choice is the conjugate of the expression below when x 2-4? 5-VX+4 O A. 5- _X+4 O B. 5+ *-4 O C. 5-7X-4 O D. 5+ /* +4

Answer 1

For this exercise it is important to know that a "Conjugate" is.

By definition, a Conjugate is a binomial whose second term has sign that is opposite of the second term of the other binomial. For example, for:

`a+b`

Its conjugate is the following:

`a-b`

In this case you have the following expression:

`5-\sqrt[]{x+4}`

Then, applying the explained above, you get that its conjugate is:

`5+\sqrt[]{x+4}`

The answer is: Option D.