Question

( )4, 16, 4 e 2,72
( )4, 16, -4 e -2,72
( )-4, -16, -4 e -2,72
( )-4, 16, 4 e 2,72
( )-4, 16, -4 e -2,72​

Answer 1

Resposta:

$f(3) = 2 \times 3 {}^{2} - 6 \times 3 - 4 = \\ f(3) = 2 \times 9 - 18 - 4 = \\ f(3) = 18 - 18 - 4 = - 4$

$f( - 2) = 2 \times ( - 2) ^{2} - 6 \times ( - 2) - 4 = \\ f( - 2) = 2 \times 4 + 12 - 4 = \\ f( - 2) = 8 + 12 - 4 = 20 - 4 = 16$

$f(0) = 2 \times 0 ^{2} - 6 \times 0 - 4 = \\ = - 4$