# algebra

posted by
**Alex**
.

How come the function square root of (4-x^2) has a domain of -2 is less than or equal to x is less than or equal to 2? I would think it would be x is greater than/equal to one.

posted by
**Alex**
.

How come the function square root of (4-x^2) has a domain of -2 is less than or equal to x is less than or equal to 2? I would think it would be x is greater than/equal to one.