Posted by **Jena** on Thursday, February 3, 2011 at 8:43pm.

Homework Help Forum: Algebra

Posted by Jena on Thursday, February 3, 2011 at 7:32pm.

Find the domain of the function.

f(x)=(sqrt x+6)/(-2x-5)

Write your answer as an interval or union of intervals.

Algebra - David, Thursday, February 3, 2011 at 7:42pm

(-6,-5/2)and(-5/2,infinity)

Algebra - Reiny, Thursday, February 3, 2011 at 7:46pm

the simplest way to describe the domain:

x ? -6 , x ? -5/2

Algebra - Jena, Thursday, February 3, 2011 at 7:52pm

I'm lost

- Algebra-still need some help -
**helper**, Thursday, February 3, 2011 at 9:18pm
For the domain, the denominator can't equal zero.

-2x - 5 = 0

-2x = 5

x = -5/2

So, x cannot equal -5/2

All x not equal to -5/2

For the numerator, you cannot have a negative inside the square root.

x + 6 >= 0

x >= -6

All x >= -6

- Algebra-still need some help -
**Jena**, Thursday, February 3, 2011 at 9:23pm
I get

(-inf,-5/2)U[-6,infin) but it doesn't look right

- Algebra-still need some help -
**helper**, Thursday, February 3, 2011 at 9:43pm
Is this a question?

## Answer This Question

## Related Questions

- Algebra-I'm still stuck - The one-to-one function f is defined by f(x)=(4x-1)/(x...
- Algebra - Find the domain of the function. f(x)=(sqrt x+6)/(-2x-5) Write your ...
- Algebra- is my answer right - The one-to-one function f is defined by f(x)=(4x-1...
- Algebra- is my answer right - The function g is defined by g(x)=3x^2+6. Find g(...
- Algebra - Find the domain of the function. (Write your answer using interval ...
- Math - Posted by Marissa on Thursday, February 19, 2015 at 6:32pm. I am having ...
- Algebra - Find the domain of the function. Write in interval notation. sqrt(x^2...
- Algebra II - I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and...
- Algebra - Some functions that aren't invertible can be made invertible by ...
- Algebra-domain - I had to find the domain of a function, and my answer is that x...

More Related Questions