Question

Questão 1- Dada a função f(x)= x2-5x+6 calcule,
f(2), f(0) e f(9)

Answer 1

f (0) = 0² - 5 · 0 + 6

f(0) = 6

f(2) = 2² - 5 · 2 +6

f(2) = 4 - 10 + 6

f(2) = 12

f(3) = 3² - 5 · 3 + 6

f(3) = 9 - 15 + 6

f(3) = 0

f(-1) = -1² - 5 · (-1) + 6

f(-1) = 12

f(1/2) = (1/2)² - 5 · (1/2) + 6

f(1/2) = 1/4 - 5/2 + 6

f(1/2) =  9/4 + 6

f(1/2) = 33/4

f(-1/2) = 1/4 + 5/2 + 6

f(-1/2) = 11/4