Find the Vertex of the Graph of the Quadratic Function $$f ( x ) = x ^ { 2 } + x - 1$$

question 248

Multiple Choice

Find the vertex of the graph of the quadratic function.
- $$f ( x ) = x ^ { 2 } + x - 1$$

• A) \(( - 1 , - 1 )\)
• B) \(( 1,1 )\)
• C) \(\left( - \frac { 1 } { 2 } , - \frac { 5 } { 4 } \right)\)
• D) \(\left( \frac { 1 } { 2 } , - \frac { 1 } { 4 } \right)\)

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