Question

if f(x)=(x^2-16)/(x+4) is continuous at x = -4, find f(-4).

Answer 1

\[f(-4)=(-4^{2}-16)/(-4+4)\]

Answer 2

I got 0
but my answer choices aare 4,-4,8,-8

Answer 3

This doesn't make sense. It would be undefined anyways because 0 cannot be the denominator

Answer 4

Wait, we need to simplify it first.

Answer 5

ok thanks ill just ask my teacher about it

Answer 6

\[(x^2-16)=(x+4)(x-4)\] So then we are left with \[(x-4)\]\[(-4)-4\]\[-8\]:)

Answer 7

Hopefully that helps lol

Answer 8

ohhh ok thanks so much

Answer 9

Thank you @haleyelizabeth2017

Answer 10

No problem :)