Question

Help and explain plz

Answer 1

`a {x}^(2) + bx + c \\ ( - b)/(2a) = - 2 > > > b = 4a \\ a {x}^(2) + 4ax + c`
put points in and find a and b easily

`c = 0 \\ 9a - 12a = 3 > > a = - 1`

`- {x}^(2) - 4x = f(x)`