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Algebra
Question

If the graph of \( f ( x ) = a x ^ { 2 } + b x + c...

If the graph of \( f ( x ) = a x ^ { 2 } + b x + c , a \neq 0 , \) has a maximum value at its vertex, which of the following conditions must be true? Select all that apply. 

\( \square \) A. \( a < 0 \) B. \( - \frac { b } { 2 a } < 0 \) 

\( \square \) C. \( - \frac { b } { 2 a } > 0 \) 

D. \( a > 0\) 

Answer

option A

Solution
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