Find the Domain of the Rational Function $f ( x ) = \frac { x ^ { 2 } - 4 } { x ^ { 2 } + 15 x + 56 }$

question 34

Multiple Choice

Find the domain of the rational function.
$f ( x ) = \frac { x ^ { 2 } - 4 } { x ^ { 2 } + 15 x + 56 }$

• A) \(\{ x \mid x \text { is a real number and } x \neq 0 \}\)
• B) \(\{ x \mid x \text { is a real number and } x \neq 8 , x \neq - 7 \}\)
• C) \(\{ x \mid x \text { is a real number and } x \neq 2 , x \neq - 2 \}\)
• D) \(\{ x \mid x \text { is a real number and } x z - 8 , x \neq - 7 \}\)

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