Question

Considerando a função f(x)= 2x² +6x -4, associe os valores corretamente.


(A) f(0) (I) 4

(B) f(-2) (II) -1/2

(C) f(2) (III) -8

(D) f(1) (IV) -4

(E) f(1) (V) 16

Answer 1

Resposta:

f(x)= 2x² +6x -4

A. f(0) = 2.0² +6.0 -4 = 0 + 0 - 4 = -4

B. f(-2) = 2.(-2)² +6.(-2) -4 = 2.4 - 12 - 4 = 8 - 12 - 4 = -8

C. f(2) = 2.(2)² +6.(2) -4 = 2.4 + 12 - 4 = 8 + 12 - 4 = 16

D. f(1/2) = 2.(1/2)² + 6.(1/2) - 4 = 2.1/4 + 3 - 4 = 1/2 - 1 = -1/2

E. f(1) = 2.(1)² +6.(1) -4 = 2.1 + 6 - 4 = 2 + 6 - 4 = 4

(A) f(0) (IV) -4

(B) f(-2) (III) -8

(C) f(2) (V) 16

(D) f(1/2) (II) -1/2

(E) f(1) (I) 4

Answer 2

Resposta:

resposta acima esta correta