So these questions have an absolute value of x under the sqrt so i don't know how to do it.

1. a) y=3x^2 +1 / 5x^2 - 25

I'm not seeing any square root or absolute values...? Also, what you have typed means the following:

. . . . .
...but I have a feeling that this isn't what you meant...?

Please review

**how to format math** and reply with clarifications. Thank you!

b). y= sqrt 2|x|-4 - all of it is under sqrt. Find Domain and Range

I think you mean the following:

. . . . .
**To find the domain**, determine the x-values for which the argument of the radical is non-negative. To find the range, graphing is a great way to start....

2. Find if function is even odd or neither

a) x^2 -x

b) 1+x^2 / |x|

c) x + sqrt x

To learn how to determine if a function is even, odd, or neither, try

**here**.