Question

Considerando a função f(x) = x² - 4 x + 4

a) Calcule f(-1), f(1), f(4).​

Answer 1

Oie, Td Bom?!

f(x) = x² - 4x + 4

f(- 1) = (- 1)² - 4 . (- 1) + 4

f(- 1) = 1 + 4 + 4

f(- 1) = 5 + 4

f(- 1) = 9

f(1) = 1² - 4 . 1 + 4

f(1) = 1 - 4 + 4

f(1) = 1

f(4) = 4² - 4 . 4 + 4

f(4) = 16 - 16 + 4

f(4) = 4

Att. Makaveli1996