Answer:
Options f(2)=0 and f(-4)=24 are correct
Step-by-step explanation:
Given function [tex]f(n)=n^2-2n.[/tex]
When you need to find f(a), you just substitute a instead of n into the function expression. So,
[tex]f(2)=2^2-2\cdot 2=4-4=0\\ \\f(1)=1^2-2\cdot 1=1-2=-1\\ \\f(-4)=(-4)^2-2\cdot (-4)=16+8=24\\ \\f(5)=5^2-2\cdot 5=25-10=15\\ \\f(-2)=(-2)^2-2\cdot (-2)=4+4=8[/tex]
So, options f(2)=0 and f(-4)=24 are correct.
