$\"\"$

The function is $\"\"$ .

Rewrite the right side term of the equation $\"\"$ as the term which is substitute the value $\"\"$ for x in the original function.

$\"\"$

Apply distributive property : $\"\"$ .

$\"\"$

Substitute the value x for $\"\"$ in the function, $\"\"$ .

$\"\"$

$\"\"$ . $\"\"$

The sample answer is $\"\"$ .