Answer:
15
Step-by-step explanation:
f(x) = x² - 2x
For f(-3), we simply change x to 3 everywhere in the equation and simplify.
f(-3) = (-3)² - 2(-3)
f(-3) = 9 - (-6)
f(-3) = 9+6 = 15
So your final answer would be 15.
Hope this helps! :D
