The given expression can be interpreted in the form (a + b)(a - b).
From algebra, we know that formula for the difference of squares, (a + b)(a - b), is a^2 - b^2. Here, a represents the first term of the binomial and b the second.
In our compressed expression, 8 is a and √5 is b. Now we can substitute these values into the difference of square formula.
That would result in a calculation of (8 * 8) - (√5 * √5), which becomes 64 - 5 after simplification.
So, based on this calculation, the correct answer to the expression (8 + √5)(8 - √5) is 59. Thus, none of the provided options (a, b, c, d) is correct.