Resposta :
f(-3) = 2 × -3² - 3 × -3 + 7 =
2 × 9 + 9 + 7 =
18 + 9 + 7 =
f (-3) = 34
f(2) = 2 × 2² - 3 × 2 + 7 =
2 × 4 - 6 + 7 =
8 - 6 + 7=
f(2) = 9
34 × 9 = 306
f(-3) = 2 × -3² - 3 × -3 + 7 =
2 × 9 + 9 + 7 =
18 + 9 + 7 =
f (-3) = 34
f(2) = 2 × 2² - 3 × 2 + 7 =
2 × 4 - 6 + 7 =
8 - 6 + 7=
f(2) = 9
34 × 9 = 306