For the parabola y = x2- 4x - 12 in the xy-plane, find the following. (a)The x-intercepts (b)The y-intercept (c)Coordinates of t

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问题 For the parabola y = x2- 4x - 12 in the xy-plane, find the following.
(a)The x-intercepts
(b)The y-intercept
(c)Coordinates of the vertex

选项

答案x = -2 and x = 6

解析
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