Answer 1

(x-5) answer
expand x^2 -25=(x+5)(x-5)
then cancel (x+5)

Answer 2

\[x \neq -5\]

Answer 3

\[x^{2}-25 = (x+5)(x-5)\] You can cancel the x - 5

Answer 4

i know that as i said it was x-5 in my question, i need the restriction.. ?

Answer 5

Thank you Myko !

Answer 6

yw

Answer 7

The restriction is that x cannot equal 5 since it would give us zero in the denominator of the original expression.

Answer 8

sorry, -5. :)