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Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find the value.

​Determine, without​ graphing, whether the given quadratic function has a maximum value or a minimum value and then find the value.

f left parenthesis x right parenthesis equals 2 x squared plus 8 x minus 5


f(x)=2x2+8x−5

Does the quadratic function f have a minimum value or a maximum​ value?


The function f has a maximum


maximum value.


The function f has a minimum


minimum value.

What is this minimum or maximum​ value?

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