Question

Hannah wishes to find the vertex of the function x2 + 3x - 28 = 0 by completing the square. Which of the following equations may be used to identify the coordinates of the vertex?

Answer 1

A. (x + 1.2)2 = 30.25

B. (x + 2.25)2 = 30.5

C. (x + 2.5)2 = 30.75

D. (x + 2.75)2 = 32.5

Answer 2

@sweetburger

Answer 3

@blanderos24

Answer 4

iven y=x^2+3x-28. How do I algebraically find: The vertex, The x and y intercepts, and write the equation in vertex and factor form.
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Complete the square:
y = x^2+3x + 9 -9-28
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y = (x+3)^2-37
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Vertex: (-3,-37)
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y-intercept:
Use the form y = x^2+3x-28