Solve the Problem $f ( x ) = x ^ { 2 } + 15 x$

question 140

Multiple Choice

Solve the problem.
-Let $f ( x ) = x ^ { 2 } + 15 x$ . Find all values $x$ for which $f ( x ) = - 54$ .

• A) \(0 , - 54\)
• B) 9,6
• C) \(- \frac { 5 } { 18 } , - \frac { 1 } { 54 }\)
• D) \(- 9 , - 6\)

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