Question

I really need help

Answer 1

are you asking is it correct?

Answer 2

@ibrafacts

Answer 3

I don't think it is :(

Answer 4

@elitedamosh

Answer 5

let g(x)=y
y=-(x-4(x+2)\[y=-(x^2+2x-4x-8)=-(x^2-2x-8)=-(x^2-2x+1-9)=-(x^2-2x+1)+9\]
\[or~y=-(x-1)^2+9\]
vertex of g(x) is (1,9)
maximum value of g(x)=9
maximum value of f(x)=9+3=12

Answer 6

correction
last line
maximum of f(x)=4
so maximum value of g(x) is 9-4=5 more than maximum of f(x)