Resposta:
Explicação passo a passo:
f(-2)=
2.(-2)²-3.2+12=
2.4-6+12=
8-6+12=
2+12=
14
f(0)=
2.0²-3.0+12=
0-0+12=
12
f(4)=
2.4²-3.4+12=
2.16-12+12=
32-12+12=
20+12=
32
f(2/3)=
2.(2/3)²-3.(2/3)+12=
2.4/9-6/3+12=
8/9-3+12=
8/9-27/9+108/9=
-19/9+108/9=
89/9