I need the answers please

Answer:
12
3
0
3
Step-by-step explanation:
[tex]f(x) = 3x^{2}[/tex]
[tex]f(-2) = 3(-2)^{2} = 3(4) = 12[/tex]
[tex]f(-1) = 3(-1)^{2} = 3(1) = 3[/tex]
[tex]f(0) = 3(0)^{2} = 3(0) = 0[/tex]
[tex]f(1) = 3(1)^{2} = 3(1) = 3[/tex]