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problems on polynomial function

Sagot :

Given the following quadratic function f (x) = 3x 2 - 12x + 13 , decide whether the graph opens upward or downward, find the vertex and axis of the graph, and find any real roots of the function.The graph opens upward. The vertex is at (2, 1) and the axis is the line x = 2 . It has no real roots.