Question

What values of x would make the following expression undefined? x^2-16/x^2-4x-12

Answer 1

In other words solve this equation:
\[x^2-4x-12=0\]

Answer 2

@Somjit please don't just given answers. This is against the Code of Conduct (CoC).

http://openstudy.com/code-of-conduct

Thank you sir!

Answer 3

Can you factor \[x^2-4x-12\]
?

Answer 4

oops and I meant give not given

Answer 5

is that (x-6)(x+2)?

Answer 6

Yep yep :)

Answer 7

So you have
x-6=0 or x+2=0
Solve both and you are done! :)

Answer 8

but i got x=6 and x=-2. what would you do after then?

Answer 9

Yep yep! :)

Answer 10

thats it?

Answer 11

Yep :)

Answer 12

The fraction is undefined when the bottom is 0 (remember we don't divide by 0)
The bottom is zero when x=6 or x=-2

Answer 13

k thanks!