The expression x^2-k^2 where k is a constant is equivalent to the expression (x+a)(x-b) where a and b are constants. What is the value of a-b

x^2 - k^2 = (x + a) (x - b)

(x + k) ( x - k) = (x + a) ( x - b)

So a = k and b = k

So

a - b = k - k = 0

Thank you so much! I actually managed to work this out before your reply and realized I was just overthinking it!

OK....good job !!!