Question

What is the simplified form of (x^2 - 25)/(x-5)?
a. x – 5, with the restriction x ≠ –5
b. x + 5, with the restriction x ≠ 5
c. x + 5, with the restriction x ≠ –5
d. x – 5, with the restriction x ≠ 5

I think its b, am i right?

Answer 1

factor the top you get

(x+5)(x-5)/(x-5)

since you cant divide by zero the domain is cannot contain 5

you are right

Answer 2

thanks!