You can put this solution on YOUR website! The only probability involved is the probability that a tutor will answer your miscategorized question. Don't submit the same problem more than once.
x^2 is x squared
(x^2 + 4x - 5) / (x^2 - 25)/(3x -15)
(x^2 + 4x - 5) can be factored (x-1)*(x+5)
(x^2 - 25) can be factored ((x-5)(x+5)
(3x -15) can be factored 3*(x-5)
(x-1)*(x+5) divided by ((x-5)(x+5)) divided by (3(x-5))
(x+5) cancels out
(x-5) cancels out
leaving us with (x-1)/3
be generous with parentheses; they are free today
