Question

Which of the following is the conjugate of the expression below when x> -3?

Answer 1

Answer:

$7+\sqrt{x+3}$

Step-by-step explanation:

The conjugate of a radical expression is obtained by changing the sign of the middle term.

The conjugate of $a+\sqrt{b}$ is simply $a-\sqrt{b}$

Therefore, to obtain the conjugate of the given expression we simply shall be  changing the negative sign to positive;

The conjugate of $7-\sqrt{x+3}$ is simply;

$7+\sqrt{x+3}$