Question

some special cases
$f(x)=x^2$
what is $f(x) + f(x) + f(x)$?
retry

Explanation:

Step1: Substitute \( f(x) \)

Given \( f(x) = x^2 \), substitute into \( f(x) + f(x) + f(x) \).
\( x^2 + x^2 + x^2 \)

Step2: Combine like terms

Combine the three \( x^2 \) terms.
\( 3x^2 \)

Answer:

\( 3x^2 \)