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

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

anonymous · Answer

set the denominator equal to zero and solve for $x$

anonymous · Answer

oh i see the problem
there is a mistake here somewhere

anonymous · Answer

maybe it is $x^2-2x-15$ in the denominator

anonymous · Answer

oh im sorry! yes its ment to be 25!

anonymous · Answer

i mean 15, i did it agian.

anonymous · Answer

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

anonymous · Answer

thanks so much!

anonymous · Answer

yw