x^2-x-20 divided by x-5

Answer 1

x^2 - x - 20/(x-5) =(x+4)(x-5)/(x-5) = x + 4.

Answer 2

(x^2 - x - 20) / (x-5)
= x+4 , x ≠ 5, that restriction is necessary, as are the brackets