Final answer:
To find the expression f(2x), substitute x with 2x in f(x) = x² - 4 and simplify the expression
Step-by-step explanation:
To find the expression f(2x), we need to substitute x with 2x in the given expression f(x) = x² - 4. Let's write the expression with the substitution:
f(2x) = (2x)² - 4
Now, simplify the expression:
Therefore, the simplified expression is 4x² - 4.