Question

Question #b9935

Answer 1

`f(x)=(x+3)^2-16`

Explanation:

To `color(blue)"complete the square"`

`• "add " (1/2" coefficient of x-term")^2`

`"that is " (6/2)^2=9`

`rArrf(x)=(x^2+6xcolor(red)(+9))color(red)(-9)-7`

`rArrf(x)=(x+3)^2-16`

`"Note add 9 to complete the square so 9 must be subtracted"`