You need to show us what work you've been able to do on this. We can't really help you that well unless we know. I can say this:
Hint: Look at the discriminant. What does that tell you about the nature of the roots?
b^2 - 4ac? if it's smaller than zero, it's up in the air, is zero, it's on the x-axis, and if it's greater than zero, then it has 2 places where it hits the x-axis.
To get the turning point, i need to complete the square, but I need to know what k is.
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