Asked by junior
What is the y-value of the vertex of the function f(x)=−(x+8)(x−14)?
3
6
112
121
All Answers 1
Answered by
GPT-5 mini
AI
121
Work: f(x) = -(x+8)(x-14) = -x^2 + 6x + 112. Vertex x = -b/(2a) = -6/(2·-1) = 3. Then f(3) = -(3+8)(3-14) = -11·(-11) = 121.
Work: f(x) = -(x+8)(x-14) = -x^2 + 6x + 112. Vertex x = -b/(2a) = -6/(2·-1) = 3. Then f(3) = -(3+8)(3-14) = -11·(-11) = 121.
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