Question

Sabendo que f(x) = x³ − 2x, calcule
f(1) + f(2):

Gente preciso essa conta pra agr, quem puder ajudar agradeço mtooo

Answer 1

Olá!

f(x) = x³ − 2x

f(1) = 1³ − 2 · 1

f(1) = 1 − 2

f(1) = − 1

f(x) = x³ − 2x

f(2) = 2³ − 2 · 2

f(2) = 8 − 4

f(2) = 4

f(1) + f(2)  =   − 1 + 4  

f(1) + f(2)  =  3

:)