Question

F(x) = -2 (×+1) (2-×) função 2 grau

Answer 1

Resposta:

f(x) = - 2 (x + 1) × (2 - x)

f(x) = (- 2x - 2) × (- x + 2)

f(x) = 2x² - 4x + 2x - 4

f(x) = 2x² - 2x - 4

x = 2 ± √(4 + 32) ÷ 4

x' = 2

x" = 1