Question

Find f(f)(3) if f(x)=x^2+x a.30 b.6 c. 33 d. -6

Answer 1

For this case we have a function of the form $y = f (x)$, where$f (x) = x ^ 2 + x$

We must find the value of the function when x = 3, that is, f (3).

So:

$f (3) = (3) ^ 2 + 3\\f (3) = 9 + 3\\f (3) = 12$

The value of the function when x = 3,is given by $y = 12$

Answer:

$f (3) = 12$