Question

F(x)=x2+8x+7
find the vertex.

Answer 1

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

Answer 2

-b/2a

Answer 3

what imran said. in this case b= 8, a = 1 \[\frac{-b}{2a}=-\frac{8}{2}=-4\]

Answer 4

then plug in -4 for x to get
\[f(-4)=(-4)^2+8\times -4=16-32+7=-16+7=-9\]

Answer 5

so vertex is (-4,-9)

Answer 6

got it?

Answer 7

Thank you sO much!

Answer 8

welcome!