Find the domains of the following expressions: ( the square of 2x+2)+( the square of 6-4x)

Answer 1

Alisa,

The domain just means what can x equal? In most cases, the answer is “Any real number.” because x can be anything. And this is the answer to both of your expressions here.

The exception to this general rule is with fractions. For example, the domain of 1/x is “Any real number except 0,” because you cannot have 0 as a fraction’s denominator. Also, for 1/(1 - x), the answer is “Any real number except 1,” because again, you cannot have 0 as a fraction’s denominator.

Hope this helps! :)