Question

Sendo f(x) = x² + 7x + 10, calcule:
A) f(0)
B) f(1)
C) f(2)
D) f(-1)
E) f(-3)
F) f(-5)

Answer 1

f(x) = x² + 7x + 10

a) f(0) =0² + 7.0 + 10  = 10

b) f(1) = 1² + 7.1 + 10 = 1 + 7 + 10 = 18

c) f(2) = 2² + 7.2 + 10 = 4 + 14 + 10 = 28

d) f(-1) = (-1)² + 7.(-1) + 10 = 1 - 7 + 10 = 4

e) f(-3) = (-3)² + 7(-3) + 10 = 9 - 21 + 10 = -2

f) f(-5) = (-5)² + 7(-5) + 10 = 25 - 35 + 10 = 0

Espero ter ajudado.