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
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 !!!