## anonymous one year ago Help! The function f(x)=1/((x^2)−4) is not defined at these x values:

1. anonymous

$f(x)= \frac{ 1 }{ x^2 - 4 }$

2. anonymous

To solve this, you set the denominator equal to 0. Then you just solve for x.

3. anonymous

Then the x you get is the x value that is undefined.

4. anonymous

I got x= $\sqrt{5}$

5. anonymous

But it said it's wrong

6. anonymous

What minus 4 equals 0?

7. anonymous

x^2-4=0. Try solving for that. You should get two answers.

8. anonymous

plus or minus 2?

9. anonymous

Correct!

10. anonymous

Thanks!!!

11. anonymous

Yep! Good job!

12. anonymous

No problem, glad both sunny and I could help!

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