Find the domain of $$f ( x ) = \frac { x + 2 } { x ^ { 2 } - 4 }$$ .
A)all real numbers except x = -2
B)all real numbers
C)all real numbers except x = -2 and x = 2
D)all real numbers except x = 4
E)all real numbers except x = 2

Question

Quizplus · Accepted Answer

The denominator $x^2 - 4$ factors to $(x - 2)(x + 2)$. The function is undefined when the denominator is 0, which occurs at $x = 2$ and $x = -2$. Therefore, the domain excludes these two values.

Find the Domain Of f(x)=x+2x2−4f ( x ) = \frac { x + 2 } { x ^ { 2 } - 4 }f(x)=x2−4x+2​

Find the Domain Of $f ( x ) = \frac { x + 2 } { x ^ { 2 } - 4 }$