Question

What exclusions are placed on the variable a for the fraction (a^2 + 4m)/a^2+4?

a -2
b. 0
c. none

Notice: The parenthesis around a^2m+4m is there to show that the whole equation is being divided by a^2+4

Answer 1

None

Explanation:

The domain of the expression is all real numbers except where the expression is unidentified. In this case, there is no real number that makes the expression unidentified.

Answer 2

The answer is A.) -2