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maleah12x
05.05.2020 •
Mathematics
Find vertex of f(x)=(x+3)(x-5)
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Ответ:
The x coordinate of the vertex will be the average of the two zeros, here -3 and 5, so x=(-3+5)/2 = 1, f(1)=(1+3)(1-5) = -16.
(1, -16)
Let's do it some other ways. How about completing the square to turn f in to vertex form?
f(x) = (x+3)(x-5) = x² - 2x - 15 = (x² - 2x + 1) - 1 - 15 = (x-1)² - 16
and now we can read off (1, -16) as the vertex.
The other method is the vertex is x= - b/2a = - (-2)/2(1) = 1.
Three methods, same answer. Good.
Ответ:
Hi Deku! I hope your having a great day! Here the answer! ↓
D. D=2.5t, continuous
i hope this helps!