Write the Quadratic Function in Vertex Form $$y = x ^ { 2 } - 20 x + 91$$

question 15

Multiple Choice

Write the quadratic function in vertex form.
- $$y = x ^ { 2 } - 20 x + 91$$

• A) \(y = ( x + 10 ) ^ { 2 } + 9\)
• B) \(y = ( x + 10 ) ^ { 2 } - 9\)
• C) \(y = ( x - 10 ) ^ { 2 } + 9\)
• D) \(y = ( x - 10 ) ^ { 2 } - 9\)

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