Question

(x/x+5)-(5/x+5)=x^2+25/x^2-25

Answer 1

to avoid confusion, you should write this as
x/(x+5) - 5/(x+5)=

(x/x+5) means (technically speaking!)
\[\frac{x}{x} +5 \]
which is 1+5=6

Answer 2

sorry

Answer 3

btw, are you sure you don't have a typo?

Answer 4

no

Answer 5

the left side is just like your previous problem

Answer 6

the answer I came out with is there is no solution

Answer 7

what happens if you replace everywhere you see x with a zero?