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The vertex form of the quadratic function f(x) = -7x +28x - 23 is (x) = a(x ? h) + k.-What is the value of
The vertex form of the quadratic function f(x) = -7x² +28x - 23 isƒ (x) = a(x ? h)² + k.-What is the value of a?What is the value of h?What is the value of k?
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