Question

9)Dada a função f(x)= x² +5x -8, calcule f(2)? *
5 pontos
8
7
22
-6
6

Answer 1

_______________

f(x) = x² + 5x - 8

______________

f(2) = (2)² + 5(2) - 8

4 + 10 - 8

4 + 2

6

_____________

Resposta:

f(2) = 6

_____________

Att: MarcosPCV

Answer 2

5° opção.

$f(x) = x {}^{2} + 5x - 8 \\ \boxed{x = 2} \\ f(2) = 2 { }^{2} +5 \: . \: 2 - 8 \\ f(2) = 4 +5 \: . \: 2 - 8\\ f(2) = 4 + 10 - 8\\ f(2) = 4 - 18 \\ \boxed{\boxed{\boxed{f(2) = 6}}}$

atte.