Question

Help. I do not know pls I require assisstance

Answer 1

Answer:

-1 is not in domain

0 and 2 both are in domain.

Explanation:

The radical function must have the domain greater or equal to 0. Here is why.

If we substitute any negative numbers in the equation

$y = \sqrt{x}$

Then we would get the Imaginary Number, meaning it doesn't exist in Real Number system. That's why any negative real numbers cannot be part of the domain.

But that's for y = square root of x. There are like 4 types of radical function but this one is for example.

The equation in the question is the same type as the example equation.