Answer:
x-1
Explanation:
To simplify the expression (x^(1/2) + 1)(x^(1/2) - 1), we can use the difference of squares formula, which states that a^2 - b^2 = (a + b)(a - b).
In this case, let's rewrite the expression as follows:
(x^(1/2) + 1)(x^(1/2) - 1) = [(x^(1/2))^2 - 1^2]
Using the difference of squares formula, we have:
[(x^(1/2))^2 - 1^2] = (x^(1/2) + 1)(x^(1/2) - 1)
Therefore, the simplified expression is x - 1.