Question

Given that f(x) = x² + 4x, evaluate f(-2).

Answer 1

F(-2)=-4
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Answer 2

Answer:

The evaluation is $f(-2)=-4$

Step-by-step explanation:

We were given an explicit function of x, wich has the form

$f(x)=x^2+4x$

The problem ask to evaluate f(-2), this means to put the value x=-2 into the function, so

$f(-2)=(-2)^2+4(-2)=4-8=-4$

Therefore, the answer is

$f(-2)=-4$