Question

5) (1,0) Sendo f(x) = x² - 5x + 4, determine:



a) f(1)

b) f(0)

c) f(6)

d) f(-3)​

Answer 1

Resposta:

a) 0; b) 4; c) 10; d) 28.

Explicação passo-a-passo:

f(x) = x² - 5x + 4 ->

a) f(1) = (1)² - 5*(1) + 4 -> f(1) = 1 - 5 + 4 -> f(1) = 0

b) f(0) = (0)² - 5*(0) + 4 -> f(0) = 0 - 0 + 4 -> f(0) = 4

c) f(6) = (6)² - 5*(6) + 4 -> f(6) = 36 - 30 + 4 -> f(6) = 10

d) f(-3) = (-3)² - 5*(-3) + 4 -> f(-3) = 9 + 15 + 4 -> f(-3) = 28