Question

What is the domain and range of `y= x^2-2`?

Answer 1

There is no restriction on the range (no roots, no fractions)

Explanation:

Since `x^2` cannot be negative the range is `[-2, oo)`
The `-2` happens when `x=0`
graph{x^2-2 [-10.08, 9.92, -2.6, 7.4]}