What is true about the function h(x) = x2 + 20x – 17? Check all that apply.

Complete the square: x² + 20x − 17 = (x + 10)² − 117. This gives the vertex (−10, −117), so choice A is true. In vertex form, the graph is shifted 10 units left and 117 units down from y = x², making choice D true. The parabola opens upward, so it has no maximum, and its axis of symmetry is x = −10.

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