Question #5f4a4
1 Answer
Oct 4, 2017
The vertex form is
Explanation:
You should start by completing the square.
#y = 4(x^2 + 6x + n - n)#
The value of
#n = (6/2)^2 = 9#
Therefore:
#y = 4(x^2 + 6x + 9 - 9)#
#y = 4(x^2 + 6x + 9) - 9(4)#
#y = 4(x + 3)^2 - 36#
The vertex of a quadratic of the form
The graph of the parabola confirms.
graph{4x^2 + 24x [-103.2, 103.2, -51.6, 51.6]}
Hopefully this helps!