Question

What are the excluded values?
-7 / ( x^2 - 2x - 25 )
~when i tried to substitute, none of them seemed to work?~
A) 0 and 15
B) 3 and -5
C) -3 and 5

Answer 1

set the denominator equal to zero and solve for \(x\)

Answer 2

oh i see the problem
there is a mistake here somewhere

Answer 3

maybe it is \(x^2-2x-15\) in the denominator

Answer 4

oh im sorry! yes its ment to be 25!

Answer 5

i mean 15, i did it agian.

Answer 6

if so, then set \(x^2-2x-15=0\) get \((x-5)(x+3)=0\) and therefore
\(x=-3\) or \(x=5\) are the excluded values since you are not allowed to divide by zero

Answer 7

thanks so much!

Answer 8

yw