Question

I got 21?

Answer 1

Let f(x) = x - 2 and g(x) = x2 - 7x - 9. Find f(g(-1)).

Answer 2

@satellite73

Answer 3

f(x) = x -2
g(x) = x^2 - 7x -9
f(g(x)) = (x^2 -7x - 9) - 2
f(g(x)) = x^2 - 7x -11
f(g(-1)) = (-1)^2 -7*(-1) -11
f(g(-1)) = 1 +7 -11 = -3

Answer 4

Depends. If by x2, you mean x^2, then it is not. It is also not if by x2 you mean 2x.

Answer 5

Ohhh i see what i did wrong i put the -1 or f not g

Answer 6

and yes

Answer 7

x2 = x^2 but i got it now i just made a little mistake which made a huge difference