Question

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

7- square root of x+3

Answer 1

`7+√(x+3)`

Explanation:

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

The conjugate of
`a+√(b)` is simply
`a-√(b)`

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

The conjugate of
`7-√(x+3)` is simply;

`7+√(x+3)`