check this

[OTHfan]

Happy Valentines Ya'll

I think my answer is right. All I need is a simple yes or no and I can see what I did wrong myself.

My problem is-

Find all values of x for the given function where the tangent line is horizontal.

f(x) =

The answer I got is = -8

Thanks

 

[happy]

We already know who you are. This is clearly obvious. You're the same person who posts under multiple screen names and simply gives a random answer, without showing any work, hoping that we will give the right answer. I can see you and your "buddies" have arrived today.

 

[stapel]

All I need is a simple yes or no...

Yes.

Eliz.