Question

Dado f (x) = x²+x -2, obtenha f (1) + f (2)

Answer 1

f (1) = 1² + 1 - 2
f (1) = 1 + 1 - 2
f (1) = 2 - 2
f (1) = 0

f (2) = 2² + 2 - 2
f (2) = 4 + 2 - 2
f (2) = 6 - 2
f (2) = 4

0 + 4 = 4