Find the Zeros of the Function $$f ( x ) = x ^ { 2 } - 9 x - 9$$

question 158

Multiple Choice

Find the zeros of the function. Give exact answers.
- $$f ( x ) = x ^ { 2 } - 9 x - 9$$

• A) \(\frac { - 9 \pm 3 \sqrt { 5 } } { 2 }\)
• B) \(\frac { 9 \pm 3 \sqrt { 13 } } { 2 }\)
• C) \(\frac { - 9 \pm 3 \sqrt { 13 } } { 2 }\)
• D) \(\frac { 9 \pm 3 \sqrt { 5 } } { 2 }\)

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