Question

dada a função f(x) = 2x² +3x+2, obtenha f(-2),f(-1),f(0),f(2) e f(3).

Answer 1

Resposta:

f(-2)

2x² +3x+2

2.(-2)² +3.(-2)+2

2.4 - 6 + 2

4

f(-2) = 4

.

f(-1)

2x² +3x+2

2.(-1)² +3.(-1)+2

2.1 - 3 + 2

1

f(-1) = 1

.

f(0)

2x² +3x+2

2.(0)² +3.(0)+2

2.0 + 0 + 2

2

f(0) = 2

.

f(2)

2x² +3x+2

2.(2)² +3.(2)+2

2.4 + 6 + 2

16

f(2) = 16

.

f(3)

2x² +3x+2

2.(3)² +3.(3)+2

2.9 + 9 + 2

29

f(3) = 29