I think the answer is x2 +64 but I hope you get it right good luck ! I hope it is 64 thanks
Step-by-step explanation:
The last one.
-5 is notht included but 6 is.
Answer:
9+6i
Step-by-step explanation:
3+6=9
5+1=6
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.
Answer: (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.
