Question

Given: f(x) = x2 - 1 and g(x) = 2x + 3. Find (g of f)(2)

Answer 1

@jim_thompson5910 @Mertsj @Luis_Rivera @hartnn

Answer 2

ok, you can first find f(2) =... ?
put x=2 in f(x)
f(2) = 2^2 -1 =... ?

Answer 3

That would be 3/2 ?

Answer 4

why /2 ?
2^2 = 4
f(2) = 4-1 = 3
right ?

Answer 5

Ohh, ok

Answer 6

so, for
(g of f)(2) = g (f(2)) = g (3)
now you have to find g(3)
just plug in x= 3 in g(x)

Answer 7

So my answer would be 6?

Answer 8

6?
g(3) = 2*3 + 3 = ... ?

Answer 9

Forgot to do plus 3 haha, it's 9

Answer 10

Thank you!

Answer 11

yes, 9
welcome ^_^