Question

F(x) = (x + 2)²
What is f(4)?
21
36
13
89

Answer 1

To find the value of f(4), we simply need to substitute x=4 into the given function f(x) and simplify:

f(x) = (x + 2)²
f(4) = (4 + 2)² [replace x with 4]
f(4) = 6²
f(4) = 36

Therefore, f(4) = 36.

So the correct option is: 36.

Answer 2

36

Explanation:

f(4) = (4+2)² = (6)² = 36