Question

Please help

Answer 1

Do you how to find the vertex of a parabola?

Answer 2

If no, I can walk you through putting your parabola in vertex form to determine the vertex

Answer 3

Do you know how to complete the square?
Like say I have x^2+kx+?
what does the ? need to be in order to complete the square

Answer 4

x^2+kx+(k/2)^2 =(x+k/2)^2
so the ? needs to be (k/2)^2

Answer 5

you have x^2+8x+?+3-?

I added a ? and also subtracted it out so the expression would still be equal to x^2+8x+3
I'm using the ? as a placeholder of what to plug in to complete the square
notice here the ?=(k/2)^2 where k is what value

Answer 6

i got D @freckles