Question

• A. all real numbers except 2
• B. all real numbers except 4
• C. all real numbers except 2 and -2
• D. all real numbers except 4 and -4

Answer 1

The correct option is C

all real numbers except 2 and -2

The denominator of this function becomes zero if x takes the value 2 or -2. Hence the domain can’t contain these values.