Question 204652
x^2 + 5x + 4 = (x+1)(x+4)
x^2 - 9 = (x-3)(x+3)

{[(x+1)(x+4)]/(x+3)^2} divided by {(x+1)/[(x-3)(x+3)]}

1/4 divided by 1/8 = 1/4 multiply by 8/1

{[(x+1)(x+4)]/(x+3)^2} multiply by {[(x-3)(x+3)]/(x+1)}

[(x+1)(x+4)(x-3)(x+3)]/[(x+3)(x+3)(x+1)]

now it's just simply cross out the same one from top and bottom.

answer:  [(x+4)(x-3)]/(x+3)