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What are the coordinates of the vertex for f(x) = x2 + 6x + 13? A. (4, 4) B. (−4, 4) C. (3, 4) D. (−3, 4) Which of the following is a factor of 5x3 + 320? A. 5 B. x+4 C. x^2-4x+1…

What are the coordinates of the vertex for f(x) = x2 + 6x + 13? A. (4, 4) B. (−4, 4) C. (3, 4) D. (−3, 4) Which of the following is a factor of 5x3 + 320? A. 5 B. x+4 C. x^2-4x+1…
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3 votes
What are the coordinates of the vertex for f(x) = x2 + 6x + 13?

A. (4, 4)
B. (−4, 4)
C. (3, 4)
D. (−3, 4)


Which of the following is a factor of 5x3 + 320?
A. 5
B. x+4
C. x^2-4x+16
D. All of the above

User George Lica
by
8.5k points

1 Answer

4 votes
x2 + 6x + 13
c = (b/2)2 = (6/2)2 = 9
x2 + 6x + 9 + 4
(x+3)2 +4
so the vertex is at: (-3, 4), D)
User Victoria Le
by
8.0k points
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