how do you simplify

Question

5-x
_______
x^2-20 to = 4

Answer 1

I will assume you meant this, and you meant solve

(5-x)/(x^2 - 20) = 4
then ....
4x^2 - 80 = 5-x
4x^2 + x - 85 = 0
x = (-1 ± √1361)/8
= appr 4.486 or -4.736

Answer 2

that is a division signs '

Answer 3

yes, and that is how I took it.

notice / is used to indicate division