Find the domain????
in interval notation
7x-2/(x+7)(x-5)

Question

Find the domain????
in interval notation
7x-2/(x+7)(x-5)

anonymous · Answer

where is this function undefined ?

anonymous · Answer

Not sure, it just says to find the domain in he rational expression and answer in interval notation. It's from my pre-cacl class if that helps anything.

anonymous · Answer

okay, so a function is undefined when the denominator is 0. Looking at this rational expression its undefined when x=-7 or x=5. right ?

anonymous · Answer

Yes, I understand that part. :)

anonymous · Answer

okay so your domain is everything except those parts.

anonymous · Answer

Ohhh okay okay, I understand.

anonymous · Answer

in interval notation you use parenthesis to show not included and hard brackets to show included and u to basically connect them.

anonymous · Answer

So the answer would be  (-infinity,-7) U (-7,2) U (-2,infinity)

anonymous · Answer

5 not 2.

anonymous · Answer

and yes.

anonymous · Answer

Okay! Thank you sooo much!

anonymous · Answer

no problem :)