F (x) = x^2-2x-8 what is axis of symmetry, vertex and roots?

X^2 - 2x - 8

2 numbers that multiplied give - 8

2 numbers that added give - 2

2 x - 4 = - 8

2 + - 4 = - 2

(x + 2) (x - 4)

roots equal = - 2, 4

x^2 - 2x - 8

a. b. c because b is - 2 in the equation you don't plug b as a negative

in the axis of symmetry

axis of symmetry = - b divide by 2a

2 divide by 2 (1) = 1

Vertex = (1, - 9)