Question

Given f(x) = 9x - 5 and g(x) = x^2 choose the expression for (f g) (x)

Answer 1

Answer:

9x²-5

Step-by-step explanation:

Given f(x) = 9x - 5 and g(x) = x², (f g)x means we will have to substitute g(x) value into f(x).

Since f(x) = 9x-5

(f g)x = 9x²-5

Note that g(x) which is equal to x² will be substituted for value of x in the function of x i.e f(x) making 9x²-5 the required answer.

Answer 2

Answer:

$9x^2 - 5 = 0$

Step-by-step explanation:

Given: $f(x) = 9x - 5$ and $g(x) = x^2$.

We are asked to find $f(g(x))$

This is composition of two functions. $f(g(x))$ means $g(x)$ becomes the input for $f(x)$.

So, now $f(g(x))$ $= f(x^2)$

$\implies f(g(x)) = 9(x^2) - 5$